APPARATUS FOR WINE-MAKING.—THE GRAPE MILL AND PRESS.
This mill can be made very simple, of two wooden rollers, fastened in a square frame, running against each other, and turned with a crank and cog-wheel. The rollers should be about nine inches in diameter, and set far enough apart to mash the berries, but not the seeds and stems. A very convenient apparatus, mill and press, is manufactured by Geiss & Brosius, Belleville, Ill., and where the quantity to be made does not exceed 2,000 gallons, it will answer every purpose. The mill has stone rollers, which can be set by screws to the proper distance, with a cutting apparatus on top, for apples in making cider, which can be taken off at will. The press is by itself, and consists of an iron screw, coming up through the platform, with a zinc tube around it to prevent the must from coming in contact with it. The platform has a double bottom, the lower one with grooves; the upper consists simply of boards, with grooves through it to allow the must to run through. These boards are held in their places by wooden pegs, and can be taken off at will. A circular hopper, about a foot in diameter, and made of laths screwed to iron rings, with about a quarter of an inch space between them, encloses the zinc tube. The outer frame is constructed in the same way, is about 2½ feet in diameter, and bound with strong wooden and iron hoops. The mashed grapes are poured into the frame, a close-fitting cover is put on, which is held down by a strong block, and the power is applied by an iron nut just on the top of the screw, with holes in each end to apply strong wooden levers. The apparatus is strong, simple, and convenient, and presses remarkably fast and clean, as the must can run off below, on the outside and also on the inside. The cost of mill and press is about $90, but each can be had separately for $45.
If a large amount of grapes are to be pressed, the press should be of much larger dimensions, but may be constructed on the same principle—a strong, large platform, with a strong screw coming through the middle, and a frame made of laths, screwed to a strong wooden frame, through which the must can run off freely, with another frame around the outside of the platform. The must runs off through grooves to the lower side, where it is let off by a spout. It may be large enough to contain a hundred bushels of grapes at a single pressing, for a great deal depends upon the ability of the vintner to press a large amount just at the proper time, when the must has fermented on the husks just as long as he desires it to do.
FERMENTING VATS.
These should correspond somewhat with the size of the casks we intend to fill; but they are somewhat unhandy if they hold more than, say four hundred gallons. They are made of oak or white pine boards, 1½ inch thick, bound securely by iron hoops, about three feet high, and, say, five feet wide. The bottom and inside must be worked clean and smooth, to facilitate washing. When the must is to ferment a longer time on the husks, as is often the case in red wines, a false bottom should be provided, for the purpose of holding the husks down below the surface of the must. It is made to fit the size of the vat, and perforated with holes, and held in its place by sticks of two inches square, let into the bottom of the vat, and which go through the false bottom. A hole is bored through them, and the bottom held down by means of a peg passed through this hole. The vat is closed by a tight-fitting cover, through which a hole is bored, large enough to admit a tin tube of about an inch in diameter, to let off the gas. The vats are set high enough above the ground to admit drawing off the must through a faucet near the bottom of the vat. For those grapes which are to be pressed immediately we need no false bottoms or covers for the vats. As fermentation generally progresses very rapidly here, and it is not desirable with most of our wines to ferment them on the husks very long, as they generally have astringency enough, operations here are much more simple than in Europe.
The must is generally allowed to run into a large funnel, filled with oat straw, and passes through a hose into the casks in the cellar. A hole can be left through the arch for that purpose, as it is much more convenient than to carry the must in buckets from the press into the casks.
It is sometimes desirable to stem the grapes, although it is seldom practiced in this country. This can be easily done by passing the bunches rapidly over a grooved board, made somewhat in the form of a common washboard, only the grooves should be round at the bottom and the edges on top. It is seldom desirable here.
THE WINE CASKS.
These should be made of well-seasoned white oak staves, and can, of course, be of various sizes to meet the wants of the vintner. The best and most convenient size for cellar use I have found to be about 500 gallons. These are sufficiently large to develop the wine fully, and yet can be filled quick enough to not interrupt fermentation. Of course, the vintner must have some of all sizes, even down to the five-gallon keg; but for keeping wine, a cask of 500 gallons takes less room comparatively, and the wine will attain a higher degree of perfection than in smaller casks. The staves to make such a cask should be about 5 feet long, and 1½ to 2 inches thick, and be the very best wood to be had. The cask will, when ready, be about as high as it is long, should be carefully worked and planed inside, to facilitate washing and have a so-called door on one end, 12 inches wide and 18 inches high, which is fastened by means of an iron bolt and screw, and a strong bar of wood. This is to facilitate cleaning; when a cask is empty, the door is taken out, and a man slips into the cask with a broom and brush, and carefully washes off all remnants of lees, etc., which, as the lees of the wine are very slimy and tenacious, cannot be removed by merely pouring in water and shaking it about. It is also much more convenient to let these large casks remain in their places, than to move them about. The casks are bound with strong iron hoops.
To prepare the new casks, and also the vats, etc., for the reception of the must, they should be either filled with pure water, and allowed to soak for several days, to draw out the tannin; then emptied, scalded with hot water, and afterwards steamed with, say two or three gallons of boiling wine; or they can be made "wine-green," by putting in about half a bushel of unslaked lime, and pouring in about the same quantity of hot water. After the lime has fallen apart, add about two quarts of water to each pound of lime, put in the bung, and turn the cask about; leaving it lie sometimes on one side, sometimes on the other, so that the lime will come in contact with every part of the cask. Then pour out the lime-water; wash once or twice with warm water, and rinse with a decoction of vine leaves, or with warm wine. Then rinse once more with cold water, and it will be fully prepared to receive the must. This is also to be observed with old casks, which have become, by neglect or otherwise, mouldy, or have a peculiar tang.
MAKING THE WINE.
As we have our apparatus all prepared now, we can commence the operation itself. This can be done in different ways, according to the class of wine we are about to make.
To make white, or light-colored wine, the grapes which were gathered and mashed during the day, can be pressed and put into the cask the following night. To mash them, we place the mill above one of the fermenting vats, mashing them as quick as they are carried or hauled to the press-house. The vat is simply covered with a cloth during the day. If the season has been good, the must will make good wine without the addition of anything else. In poor seasons it will be necessary to add water and sugar, to improve its quality, but I will speak of this method in a separate chapter. In the evening, the must which will run off, is first drawn from the vat, and by some kept separate; but I think, it makes, upon the whole, a better wine, if the pressing is added to it. The husks, or mashed grapes, are then poured upon the press, and pressed until fully dry. To accomplish this the press is opened several times, and the edges of the cake, or "cheese," as some call it, are cut off with an axe or cleaver and put on top, after which they are pressed down again. The casks are then filled with the must; either completely, if it is intended that the must should fermentabove, as it is called, orunder, when the cask is not completely filled, so that the husks, which the must will throw up, will remain in the cask. Both methods have their advantages, but I prefer the former, with a very simple contrivance, to exclude the air, and also prevent waste. This is a siphon or tin tube, bent in the form of a double elbow, of which one end fits tightly in the bung hole, and the other empties into a dish of water, to be set on one end of the cask, through which the gas escapes, as shown in Fig. 30.
We should, however in pressing, be guided somewhat by the weather. In warm weather fermentation will commence much sooner, and be more violent, than when the weather is cold. Consequently we should press much sooner in warm weather, than when the air is cool. Late in the fall, it is sometimes advisable to leave the must a day longer on the husks, than indicated below. The cellar should be kept at an even temperature of about 60° during the first few weeks, and if it does not naturally attain this temperature, then it should be warmed by a stove, as much of the quality of the wine depends upon a thorough fermentation during the first ten days.
Fig. 30.Fig. 30.
Fig. 30.
When violent fermentation has ceased, say after about ten or twelve days, and the must has become quiet, the cask should be closed with a tight bung, and the wine is left until it is clear. In about two to three months it ought to be perfectly clear and fine—is then racked,i.e., drawn from the lees, by means of a faucet, and put into clean, sweet casks. It is very important that the casks are "wine-seasoned," that is, have no other tang than of wine. For must, fresh brandy or whiskey casks may be used, but after the wine has fermented, it will not do to use such, as the wine will acquire the smell and taste of the liquor. When a cask has been emptied, it should be carefully cleaned, as before described, by entering at the door, or with smaller casks, by taking out the head. After it is thoroughly cleansed, it may be fumigated slightly, by burning a small piece of sulphured paper, or a nutmeg in it, and then filled. To keep empty casks in good condition they should, after cleaning, be allowed to become thoroughly dry, when they are sulphured, closed tightly, and laid away in the cellar. The operation of sulphuring should be repeated every six weeks. If wanted for use, they are simply rinsed with cold water.
Fig. 31..Fig. 31.
Fig. 31.
For racking the wine, we should have: 1st a large brass faucet. 2d. Pails of a peculiar shape, wider at the top, to prevent wastage. 3d. A wooden funnel, as shown in Fig. 31, to hold about six gallons. In racking—first carefully lift the bung of the cask, as the exclusion of air from above would cause a gurgling motion in the cask, if tapped below, which would stir up the lees in the bottom. Then, after having loosened with a hammer the wooden peg, closing the tap hole, let your assistant hold the pail opposite the hole, hold the faucet in your right hand, and with the left, withdraw the plug, inserting the faucet quickly. Drive it in firmly with a hammer, and you are ready for the work.
Do not fully open the faucet at first, because the first pailful is generally not quite clear, and should run slowly. You can keep this by itself; and this, and the last from the lees, is generally put into a cask together and allowed to settle again. It will make a good, clear wine after a few weeks. As soon as the wine runs quite clear and limpid, it can be put into the cask destined to receive it, and you can let it run as fast as it can be emptied. When the wine has run off down to the tap hole, the cask may be carefully raised on the other end, one inserting a brick or piece of board under it, while the other lifts gently and slowly. This may be repeated several times, as long as the wine runs clear; and even the somewhat cloudy wine may be put with the first pailful into a separate cask. As soon as it comes thick or muddy, it is time to stop. The lees are emptied out, and will, if distilled, make a fine flavored and very strong brandy.
This treatment can be applied to all white and light-colored wines, when it is not desirable to have a certain astringency in the wine. The Catawba, Concord, Herbemont, Delaware, Rulander, Cassady, Taylor, Louisiana, Hartford Prolific, and Cunningham should all be treated in a similar manner. The Concord, although it will, under this treatment, make only a light red wine, of which the color can be changed to dark red by fermenting on the husks, is not desirable if treated in the latter manner; as the peculiar foxy aroma of the grape will be imparted to the must to such a degree, as to make the flavor disagreeable, I shall recur to the subject of flavor in wines in another chapter.
To make red wine, the must should be fermented on the husks, as generally the darkest color is desired, and also, a certain astringency, which the wine will acquire principally from the seeds, skins, and stems of the grapes, which contain the tannin. The grapes are mashed, and put into the fermenting vat, of the kind described before, with false bottoms. After the vat is filled about three-fourths the false bottom is put on, the husks are pressed down by it, until they are covered about six inches by the must, and the cover put on. It is seldom desirable here to ferment longer than three days on the husks, if the weather is warm—in a temperature of 60°—two days will often be enough, as the wine will become too rough and astringent by an excessively long fermentation. Only experience will be the proper guide here, and also the individual taste. It will be generally time to press, when the must has changed its sweet taste, and acquired a somewhat rough and bitter one. Where it is desired to make a very dark colored wine, without too much astringency, the grapes should be stemmed, as most of the rough and bitter taste is in the stems; and it can then be fermented on the husks for six or eight days. In this manner the celebrated Burgundy wines are made; also most of the red wines of France and Germany. Many of them are even allowed to go through the whole process of fermentation, and the husks are filled into the cask with the must, through a door, made in the upper side of the cask; and it there remains, until the clear wine is drawn off. This is seldom desirable here, however, as our red wine grapes have sufficient astringency and color without this process. The treatment during fermentation, racking, etc., is precisely the same as with white wine, with only this difference, that the red wine is generally allowed to stay longer on the lees; for our object in making this class of wine is different than in making white, or so-called Schiller or light red wine. In white and light colored wines we desire smoothness and delicacy of bouquet and taste; in dark red wines, we desire astringency and body, as they are to be the so-called stomach or medical wines. It is therefore generally racked but once, in the latter part of February or March, and the white and light colored wines are racked in December or January, as soon as they have become clear—and again in March. We also use no sulphur in fumigating the casks, as it takes away the color to a certain extent. We generally do not use anything, but simply clean the casks well, in racking red wine.
I will say a few words in regard tounderfermentation. If this method is to be followed, the casks are not filled, but enough space left to allow the wine to ferment, without throwing out lees and husks at the bung. The bung is then covered, by laying a sack filled with sand over it, and when fermentation is over—as well by this as by the other method—the casks are filled with must or wine, kept in a separate cask for the purpose. The casks should always be kept well filled, and must be looked over and filled every two or three weeks, as the wine will continually lose in quantity, by evaporation through the wood of the casks. The casks should be varnished or brushed over with linseed oil, as this will prevent evaporation to some extent.
In wine making, and giving the wine its character, we can only be guided by practice and individual taste, as well as the prevailing taste of the consuming public. If the prevailing taste is for light colored, smooth and delicate wines, we can make them so, by pressing immediately, and racking soon, and frequently. If a dark colored, astringent wine is desired, we can ferment on the husks, and leave it on the lees a longer period. There is a medium course, in this as in everything else; and the intelligent vintner will soon find the rules which should guide him, by practice with different varieties.
Among the wines to be treated as dark red, I will name Norton's Virginia, Cynthiana, Arkansas, and Clinton, and, I suppose, Ives' Seedling. It would be insulting to these noble wines to class with them the Oporto, which may make a very dark colored liquid, but nowineworth the name, unless an immense quantity of sugar is added, and enough of water to dilute the peculiar vile aroma of that grape.
AFTER TREATMENT OF THE WINE.
Even if the wine was perfectly fine and clear, when drawn off, it will go through a second fermentation as soon as warm weather sets it—say in May or June. If the wine is clear and fine, however, the fermentation will be less violent, than if it is not so clear, as the lees, which the wine has never entirely deposited; act as they ferment. It is not safe or judicious, therefore, to bottle the winebeforethis second fermentation is over. As soon as the wine has become perfectly clear and fine again—generally in August or September—it can be bottled. For bottling wine we need: 1st. clean bottles. 2d. good corks, which must first be scalded with hot water, to soften them, and draw out all impurities, and then soaked in cold water. 3d. a small funnel. 4th. a small faucet. 5th. a cork-press, of iron or wood. 6th. a light wooden mallet to drive in the corks.
After the faucet has been inserted in the cask, fill your bottles so that there will be about an inch of room between the cork and the wine. Let them stand about five minutes before you drive in the cork, which should always be of rather full size, and made to fit by compressing it with the press at one end. Then drive in the cork with the mallet, and lay the bottles, either in sand on the cellar floor, or on a rack made for that purpose. They should be laid so that the wine covers the cork, to exclude all air.
The greater bulk of the wine, however, if yet on hand; can be kept in casks. All the wine to be kept thus, should be racked once in about six months, and the casks kept well filled. Most of our native wines, however, are generally sold after the second racking in March, and a great many even as soon as clear—in January.
DISEASES OF THE WINE AND THEIR REMEDIES.
These will seldom occur, if the wine has been properly treated. Cases may arise, however, when it will become necessary to rack the wine, or fine it by artificial means.
TREATMENT OF FLAT AND TURBID WINE.
The cause of this is generally a want of Tannin. If the wine has a peculiar, flat, soft taste, and looks cloudy, this is generally the case. Draw the wine into another cask, which has been well sulphured, and add some pulverized tannin, which can be had in every drug store. The tannin may be dissolved in water—about an ounce to every two hundred gallons of wine—and the wine well stirred, by inserting a stick at the bung. Should it not have become clear after about three weeks, it should be fined. This can be done, by adding about an ounce of powdered gum-arabic to each forty gallons, and stirring the wine well when it has been poured in. Or, take some wine out of the casks—add to each forty gallons which it contains the whites of ten eggs, whipped to foam with the wine taken out—pour in the mixture again—stir up well, and bung up tight. After a week the wine will generally be clear, and should then be drawn off.
USE OF THE HUSKS AND LEES.
These should be distilled, and will make a very strong, fine flavored brandy. The husks are put into empty barrels or vats—stamped down close, and a cover of clay made over them, to exclude the air. They will thus undergo a fermentation, and be ready for distillation in about a month. They should be taken fresh from the press, however; for if they come into contact with the air, they will soon become sour and mouldy. The lees can be distilled immediately. Good fresh lees, from rather astringent wines are also an excellent remedy when the wine becomes flat, as before described.
DR. GALL'S AND PETIOL'S METHOD OF WINE MAKING.
The process of wine making before described, however, can only be applied in such seasons, and with such varieties of grapes, that contain all the necessary elements for a good wine in due proportion. For unfavorable seasons, with such varieties of grapes as are deficient in some of the principal ingredients, we must take a different course—follow a different method. To see our way clearly before us in this, let us first examine which are the constituent parts of must or grape juice. A chemical analysis of must, shows the following result:
Grape juice contains sugar, water, free acids, tannin, gummy and mucous substances, coloring matter, fragrant or flavoring substances, (aroma bouquet). A good wine should contain all these ingredients in due proportion. If there is an excess of one, and a want of the other, the wine will lose in quality. Must, which contains all of these, in due proportion, we callnormalmust, and only by determining the amount of sugar and acids in this so-called normal must, can we gain the knowledge how to improve such must, which does not contain the necessary proportion of each. The frequent occurrence of unfavorable seasons in Europe, when the grapes did not ripen fully, and were sadly deficient in sugar, set intelligent men to thinking how this defect could be remedied; and a grape crop, which was almost worthless, from its want of sugar, and its excess of acids, could be made to yield at least a fair article, instead of the sour and unsaleable article generally produced in such seasons. Among the foremost who experimented with this object in view I will here nameChaptal,Petiol; but especiallyDr. Ludwig Gall, who has at last reduced the whole science of wine-making to such a mathematical certainty, that we stand amazed only, that so simple a process should not have been discovered long ago. It is the old story of the egg of Columbus; but the poor vintners of Germany, and France, and we here, are none the less deeply indebted to those intelligent and persevering men for the incalculable benefits they have conferred upon us. The production of good wine is thus reduced to a mathematical certainty; although we cannot in a bad season, produce as high flavored and delicate wines, as in the best years, we can now always make a fair article, by following the simple rules laid down byDr. Gall. When this method was first introduced, it was calumniated and despised—called adulteration of wine, and even prohibited by the governments of Europe; but,Dr. Gallfearlessly challenged his opponents to have his wines analyzed by the most eminent chemists; which was repeatedly done, and the results showed that they contained nothing but such ingredients which pure wine should contain; and since men likeVon Babo,Dobereinerand others have openly endorsed and recommended gallizing, prejudice is giving way before the light of scientific knowledge.
But to determine the amount of sugar and acids contained in the must we need a few necessary implements. These are:
THE MUST SCALE OR SACCHAROMETER.
Fig. 32.Fig. 32.
Fig. 32.
The most suitable one now in use is theOechsle'smust scale, constructed on the principle that the instrument sinks the deeper into any fluid, the thinner it is, or the less sugar it contains. Fig. 32 shows this instrument, "which is generally made of silver, or German silver, although they are also made of glass. A, represents a hollow cylinder—best made of glass, filled with must to the brim, into which place the must scale B. It is composed of the hollow floata, which keeps it suspended in the fluid; of the weightc, for holding in a perpendicular position; and of the scaleedivided by small lines into from fifty to one hundred degrees. Before the gauge is placed in the must, draw it several times through the mouth, to moisten it—but allow no saliva to adhere to it. When the guage ceases to descend, note the degree to which it has sunk; after which press it down with the finger a few degrees further, and on its standing still again, the line to which the must reaches, indicates its so-called weight, expressed by degrees." The must should be weighed in an entirely fresh state, before it shows any sign of fermentation, and should be free from husks, and pure.
This instrument, which is indispensable to every one who intends to make wine, can be obtained in nearly every large town, from the prominent opticians.Jacob Blattner, at St. Louis keeps them for sale.
The saccharometer will indicate the amount of sugar in the must, and its use is so simple, that every one can soon become familiar with it. The next step in the improvement of wines was to determine the amount of acids the must contained, and this problem has also been successfully solved by the invention of the acidimeter:
THE ACIDIMETER AND ITS USE.
"The first instrument of this kind which came into general use, was one invented byDr. Otto, and consists of a glass tube, from ten to twelve inches in length, half an inch in width, and closed at the lower end. Fig. 33 showsOtto'sAcidimeter.
"The tube is filled to the partition linea, with tincture of litmus. The must to be examined, before it has begun to ferment is then poured into the tube, until it reaches the line 0. The blue tincture of litmus, which would still be blue, if water had been added, is turned into rose-color by the action of the acids contained in the must.
Fig. 33.Fig. 33.
Fig. 33.
"If a solution of 1,369 per cent, of caustic ammonia is added to this red fluid, and the tube is turned around to effect the necessary mixture, keeping its mouth closed with the thumb, after the addition of more or less of the ammonical fluid, it will change into violet. This tinge indicates the saturation of the acids, and the height of the fluid in the tube now shows the quantity of acid in the must, by whole, half and fourth parts per cent. The lines marked 1, 2, 3, 4, indicate whole per cents.; the short intermediate lines, one-fourth per cents."
WhenDr. Gall, shortly before the vintage of 1850, first publicly recommended the dilution of the acids, he was obliged to refer to this instrument, as already known, and everywhere at hand, which was at the same time cheap, and simple in its use. "It is true, however, that if must is examined by this instrument, the quantity of acids contained in it, is really somewhat larger than indicated by the instrument; because the acids contained in the must require for their saturation a weaker solution of ammonia than acetic acid." As however,Otto'sacidimeter shows about one eighth of the acids less than the must actually contains, and about as much acids combined with earths is removed during fermentation,Dr. Gallrecommends that the quantity of acids be reduced to 6½, or at most 7 thousandths ofOtto'sacidimeter, and the results have shown that this was about the right proportion; as the wines in which the acids were thus diluted were in favor with all consumers.
"The acidimeter referred to was afterwards improved, by making the tube longer and more narrow, and dividing it into tenths of per cents, instead of fourths; thus dividing the whole above 0 into thousandths. But although by this improved acidimeter the quantity of acids could be ascertained with more nicety, there remained one defect, that in often turning the glass tube for mixing the fluids, some of the contents adhered to the thumb in closing its mouth. This defect was remedied in a new acidimeter, invented by Mr.Geisler, who also invented the new vaporimeter for the determination of the quantity of alcohol contained in wine. It is based on the same principle asOtto's, but differs altogether in its construction. It is composed of three parts, all made of glass; the mixing bottle, Fig. 34; the Pipette, Fig. 35; and the burette, Fig 36. Besides, there should be ready three small glasses—one filled with tincture of litmus, the second with a solution of 1,369 per ammonia, and the third with the must or wine to be tested; also, a taller glass, or vessel, having its bottom covered with cotton, in which glass the burette, after it has been filled with the solution of ammonia, is to be placed in an upright position until wanted.
Fig. 34, 35, 36.Fig. 34. Fig. 35. Fig. 36.
Fig. 34. Fig. 35. Fig. 36.
"To use this instrument the must and the tincture of litmus, having first received the normal temperature of 14° Reaumer, are brought into the mixing bottle by means of the pipette, which is a hollow tube of glass, open on both ends. To fill it, place its lower end into the tincture or must, apply the mouth to the upper end, and by means of suction fill it with the tincture of litmus to above the line indicated at A. The opening of the top is then quickly closed with the thumb; by alternately raising the thumb, and pressing it down again, so much of the tincture is then allowed to flow back into the glass so as to lower the fluid to the line indicated at A. The remainder is then brought into the bottle, and the last drops forced out by blowing into the pipette.
"In filling it with must, raise the fluid in the same way, until it comes up to the line indicated at B, and then empty into the mixing bottle.
"The burette consists of two hollow tubes of glass. In filling it, hold the smaller tube with the right hand into the glass containing the solution of ammonia, apply the mouth to the larger one, and by drawing in the fluid the tube is filled exactly to the line indicated at 0 of the tube.
"Holding the mixing bottle by the neck between the thumb and forefinger of the left hand, place the smaller tube of the burette into the mouth of the mixing bottle, which must be constantly shaken; let enough of the solution of ammonia be brought drop by drop, into the mixture in the bottle, till the red has been changed into the deep reddish blue of the purple onion. This is the sign of the proper saturation of the acids. To distinguish still better, turn the mixing bottle upside down, by closing its mouth with the thumb, and examine the color of the fluid in the tube-shaped neck of the bottle, and afterwards, should it be required, add another drop of the ammonia. Repeat this until the proper tone of color has been reached, neither red nor blue. After thus fixing the precise point of the saturation of the acids, the burette is held upright, and the quantity of the solution of ammonia consumed is accurately determined,—that is, to what line on the scale the burette has been emptied. The quantity of the solution so used corresponds with the quantity of acids contained in the must—the larger division lines opposite the numbers indicating the thousandths part, and the smaller lines or dots the ten thousandths part.
"Until the eye has learned by practice to recognize the points of saturation by the tone of color, it can be proven by means of litmus paper. When the mixture in the bottle begins to turn blue, put in the end of a slip of litmus paper about half an inch deep, and then draw this end through your fingers, moistened with water. So long as the ends of the blue litmus paper become more or less reddened, the acids have not been completely saturated. Only when it remains blue, has the point of saturation been reached.
"In examiningredmust, the method should be modified as follows:—Instead of first filling the pipette with tincture of litmus, fill it with water to the line A, and transfer it into the bottle. After the quantity of must has been added, drop six-thousandths of the solution of ammonia into the mixture, constantly shaking it while dropping, then test it, and so on, until, after every further addition required with litmus paper, it is no longer reddened after having been wiped off."
Dr. Gallfurther gives the following directions, as a guide, to distinguish and determine the proportion of acids which a must should contain, to be still agreeable to the palate, and good:
"Chemists distinguish the acid contained in the grape as the vinous, malic, grape, citric, tannic, gelatinous and para-citric acids. Whether all these are contained in the must, or which of them, is of small moment for us to know. For the practical wine-maker, it is sufficient to know, with full certainty, that, as the grape ripens, while the proportion of sugar increases, the quantity of acids continually diminishes; and hence, by leaving the grapes on the vines as long as possible, we have a double means of improving their products—the must or wine.
"All wines, without exception, to be of good and of agreeable taste, must contain from 4½ to 7 thousandths parts of free acids, and each must containing more than seven thousandths parts of free acids may be considered as having too little water and sugar in proportion to its quantity of acids.
"In all wine-growing countries of Germany, for a number of years past, experience has proved that a corresponding addition of sugar and water is the means of converting the sourest must, not only into a good drinkable wine, but also into as good a wine as can be produced in favorable years,exceptin that peculiar and delicate aroma found only in the must of well-ripened grapes, and which must and will always distinguish the wines made in the best seasons from those made in poor seasons.
"The saccharometer and acidimeter, properly used, will give us the exact knowledge of what the must contains, and what it lacks; and we have the means at hand, by adding water, to reduce the acids to their proper proportion; and by adding sugar, to increase the amount of sugar the must should contain; in other words, we can change the poor must of indifferent seasons into the normal must of the best seasons ineverything,exceptits bouquet or aroma, thereby converting an unwholesome and disagreeable drink into an agreeable and healthy one."
THE CHANGE OF THE MUST, BY FERMENTATION, INTO WINE.
Let us glance for a few moments at this wonderful, simple, and yet so complicated process, to give a clearer insight into the functions which man has to perform to assist Nature, and have her work for him, to attain the desired end. I cannot put the matter in a better light for my readers than to quote again fromDr. Gall. He says:—"To form a correct opinion of what may and can be done in the manufacture of wine, we must be thoroughly convinced that Nature, in her operations, has other objects in view than merely to serve man as his careful cook and butler. Had the highest object of the Creator, in the creation of the grape, been simply to combine in the juice of the fruit nothing but what is indispensable to the formation of that delicious beverage for the accommodation of man, it might have been still easier done for him by at once filling the berries with wine already made. But in the production of fruits, the first object of all is to provide for the propagation and preservation of the species. Each fruit contains the germ of a new plant, and a quantity of nutritious matter surrounding and developing that germ. The general belief is, that this nutritious matter, and even the peculiar combination in which it is found in the fruit, has been made directly for the immediate use of man. This, however, is a mistake. The nutritious matter of the grape, as in the apple, pear, or any similar product, is designed by Nature only to serve as the first nourishment of the future plant, the germ of which lies in it. There are thousands of fruits of no use whatever, and are even noxious to man, and there are thousands more which, before they can be used, must be divested of certain parts, necessary, indeed, to the nutrition of the future plant, but unfit, in its present state, for the use or nourishment of man. For instance, barley contains starch, mucilaginous sugar, gum, adhesive matter, vegetable albumen, phosphate of lime, oil, fibre and water. All these are necessary to the formation of roots, stalks, leaves, flowers and the new grain; but for the manufacture of beer, the brewer needs only the first three substances. The same rule applies to the grape.
"In this use of the grape, all depends upon the judgment of man to select such of its parts as he wishes, and by his skill he adapts and applies them in the best manner for his purposes. In eating the grapes, he throws away the skins and seeds; for raisins, he evaporates the water, retaining only the solid parts, from which, when he uses them, he rejects their seeds. If he manufactures must, he lets the skins remain. In making wine, he sets free the carbonic acid contained in the must, and removes the lees, gum, tartar, and, in short, everything deposited during, and immediately after fermentation, as well as when it is put into casks and bottles. He not only removes from the wine its sediments, but watches the fermentation, and checks it as soon as its vinous fermentation is over, and the formation of vinegar about to begin. He refines his wine by an addition of foreign substances if necessary; he sulphurizes it; and, by one means or another, remedies its distempers.
"The manufacture of wine is thus a many-sided art; and he who does not understand it, or knows not how to guide and direct the powers of Nature to his own purposes, may as well give up all hopes of success in it."
So farDr. Gall; and to the intelligent and unbiased mind, the truth and force of these remarks will be apparent, without further extending or explaining them. How absurd, then, the blind ravings of those who talk about "natural" wines, and would condemn every addition of sugar and water to the must by man, when Nature has not fully done her part, as adulteration and fraud. Why, there is no such thing as a "natural wine;" for wine—good wine—is the product of art, and a manufacture from beginning to end. Would we not think that parent extremely cruel, as well as foolish, who would have her child without clothing, simply because Nature had allowed it to be born without it? Would not the child suffer and die, because its mother failed to aid Nature in her work, by clothing and feeding it when it is yet unable to feed and clothe itself? And yet, would not that wine-maker act equally foolish who has it within his power to remedy the deficiencies of Nature with such means as she herself supplies in good season, and which ought and would be in the must but for unfavorable circumstances, over which we have no control? Wine thus improved is just as pure as if the sugar and water had naturally been in the grapes in right proportions; just as beneficial to health; and only the fanatical "know-nothing" can call it adulterated. But the prejudices will disappear before the light of science and truth, however much ignorance may clamor against it.Galileo, when forced to abjure publicly his great discovery of the motion of the earth around the sun as a heresy and lie, murmured between his teeth the celebrated words, "And yet it moves." Itdidmove; and the theory is now an acknowledged truth, with which every schoolboy is familiar. Thus will it be with improved wine-making. It will yet be followed, generally and universally, as sure as the public will learn to distinguish between good and poor wine.
Let us now observe for a moment the change which fermentation makes in converting the must into wine. The nitrogeneous compounds—vegetable albumen, gluten—which are contained in the grape, and which are dissolved in the must as completely as the sugar, under certain circumstances turn into the fermenting principle, and so change the must into wine. This change is brought about by the fermenting substance coming into contact with the air, and receiving oxygen from it, in consequence of which it coagulates, and shows itself in the turbid state of must, or young wine. The coagulation of the lees takes place but gradually, and just in the degree the exhausted lees settle. The sugar gradually turns into alcohol. The acids partly remain as tartaric acid, are partly turned into ether, or settle with the lees, chrystallize, and adhere to the bottom of the casks. The etheric oil, or aroma, remains, and develops into bouquet; also the tannin, to a certain degree. The albumen and gluten principally settle, although a small portion of them remains in the wine. The coloring matter and extractive principle remain, but change somewhat by fermentation.
Thus it is the must containing a large amount of sugar needs a longer time to become clear than that containing but a small portion of it; therefore, many southern wines retain a certain amount of sugar undecomposed, and they are calledsweet, or liqueur wines; whereas, wines in which the whole of the sugar has been decomposed are calledsourordrywines.
I have thought it necessary to be thus explicit to give my readers an insight into the general principles which should govern us in wine-making. I have quoted freely from the excellent work ofDr. Gall. We will now see whether and how we can reduce it to practice. I will try and illustrate this by an example.
NORMAL MUST.
"Experiments continued for a number of years have proved that, in favorable seasons, grape juice contains, on the average, in 1,000 lbs.:
This proportion would constitute what I call a normal must. But now we have an inferior season, and the must contains, instead of the above proportions, as follows:
What must we do to bring such must to the condition of a normal must? This is the question thus arising. To solve it, we calculate thus: If, in six pounds of acids in a normal wine, 240 pounds of sugar appear, how much sugar is wanted for nine pounds of acids? Answer, 360 pounds. Our next question is: If, in six pounds of acids in a normal must, 754 pounds of water appear, how much water is required for nine pounds of acids? Answer, 1,131 pounds. As, therefore, the must which we intend to improve by neutralizing its acids, should contain 360 pounds of sugar, nine pounds of acids, and 1,131 pounds of water, but contains already 150 pounds of sugar, 9 pounds of acids, and 841 pounds of water, there remain to be added, 210 pounds of sugar, no acids, and 290 pounds of water.
By ameliorating a quantity of 1,000 pounds must by 210 pounds sugar, and 290 pounds water, we obtain 1,500 pounds of must, consisting of the same properties as the normal must, which makes a first-class wine."
This is wine-making, according toGall'smethod, in Europe. Now, let us see what we can do with it on American soil, and with American grapes.
THE MUST OF AMERICAN GRAPES.
If we examine the must of most of our American wine grapes closely, we find that they not only contain an excess of acids in inferior seasons, but also a superabundance of flavor or aroma, and of tannin and coloring matter. Especially of flavor, there is such an abundance that, were the quantity doubled by addition of sugar and water, there would still be an abundance; and with some varieties, such as the Concord, if fermented on the husks, it is so strong as to be disagreeable. We must, therefore, not only ameliorate the acid, but also the flavor and the astringency, of which the tannin is the principal cause. Therefore it is, that to us the knowledge of how to properly gallize our wines is still more important than to the European vintner, and the results which we can realize are yet more important. By a proper management, we can change must, which would otherwise make a disagreeable wine, into one in which everything is in its proper proportion, and which will delight the consumer, to whose fastidious taste if would otherwise have been repugnant. True, we have here a more congenial climate, and the grapes will generally ripen better, so that we can in most seasons produce a drinkable wine. But if we can increase the quantity, and at the same time improve the quality, there is certainly an inducement, which the practical business sense of our people will not fail to appreciate and make use of.
There is, however, one difficulty in the way. I do not believe that the acidimeter can yet be obtained in the country, and we must import them direct from the manufacturers,Dr. L. C. Marquart, of Bonn, on the Rhine; orJ. Diehn, Frankfort-on-the-Main.
However, this difficulty will soon be overcome; and, indeed, although it is impossible to practice gallizing without a saccharometer, we may get at the surplus of acids with tolerable certainty by the results shown by the saccharometer. To illustrate this, I will give an example:
Last year was one of the most unfavorable seasons for the ripening of grapes we have ever had here, and especially the Catawba lost almost nine-tenths of its crop by mildew and rot; it also lost its leaves, and the result was, that the grapes did not ripen well. When gathering my grapes, upon weighing the must, I found that it ranged from 52° to 70°; whereas, in good seasons, Catawba must weighs from 80° to 95°. I now calculated thus: if normal must of Catawba should weigh at least 80°, and the must I have to deal with this season will weigh on an average only 60°, I must add to this must about ½ lb. of sugar to bring it up to 80°. But now I had the surplus acid to neutralize yet. To do this, I calculated thus: If, even in a normal Catawba must, or a must of the best seasons, there is yet an excess of acid, I can safely count on there being at least one-third too much acid in a must that weighs but 60°. I, therefore, added to every 100 gallons of must 40 gallons of soft water, in which I had first dissolved 80 lbs. of crushed sugar, which brought the water, when weighed after dissolving the sugar in it, up to 80°. Now, I had yet to add 50 lbs., or half a pound to each gallon of the original must, to bringthisup to 80°. I thus pressed, instead of 100 gallons, 150 gallons, from the same quantity of grapes; and the result was a wine, which every one who has tasted it has declared to be excellent Catawba. It has a brilliant pale yellow color, was perfectly clear 1st of January, and sold by me to the first one to whom I offered it, at a price which I have seldom realized for Catawba wine made in the best seasons, without addition of sugar or water. True, it has not as strong an aroma as the Catawba of our best seasons, nor has it as much astringency; but this latter I consider an advantage, and it still has abundant aroma to give it character.
Another experiment I made with the Concord satisfied me, without question, that the must of this grape will always gain by an addition of water and sugar. I pressed several casks of the pure juice, which, as the Concord had held its leaves and ripened its fruit very well, contained sugar enough to make a fair wine, namely, 75°. This I generally pressed the day after gathering, and put into separate casks. I then took some must of the same weight, but to which I had added, to every 100 gallons, 50 gallons of water, in which I had diluted sugar until the water weighed 75°, or not quite two pounds of sugar to the gallon of water, pressed also after the expiration of the same time, and otherwise treated in the same manner. Both were treated exactly alike, racked at the same time; and the result is, that every one who tries the two wines, without knowing how they have been treated, prefers the gallized wine to the other—the pure juice of the grape. It is more delicate in flavor, has less acidity, and a more brilliant color than the first, the ungallized must. They are both excellent, but there is a difference in favor of the gallized wine.
Dr. Gallrecommends grape sugar as the best to be used for the purpose. This is made from potato starch; but it is hard to obtain here, and I have found crushed loaf sugar answer every purpose. I think this sugar has the advantage over grape sugar, that it dissolves more readily, and can even be dissolved in cold water, thus simplifying the process very much. It will take about two pounds to the gallon of water to bring this up to 80°, which will make a wine of sufficient body. The average price of sugar was about 22 cents per pound, and the cost of thus producing an additional gallon of wine, counting in labor, interest on capital, etc., will be about 60 cents. When the wine can be sold at from $2 to $3 per gallon, the reader will easily perceive of what immense advantage this method is to the grape-grower, if he can thereby not only improve the quality, but also increase the quantity of the yield.
The efforts made by the Commissioner of Patents, and the contributors to the annual reports from the Patent Office, to diffuse a general knowledge of this process, can therefore not be commended too highly. It will help much to bring into general use, among all classes, good, pure, native wines; and as soon as ever the poorer classes can obtain cheap agreeable wines, the use of bad whiskey and brandy will be abandoned more and more, and this nation will become a more temperate people.
But this is only the first step. There is a way to still further increase the quantity.Dr. Galland others found, by analyzing the husks of the grape after the juice had been extracted by powerful presses, that they not only still contained a considerable amount of juice, but also a great amount of extracts, or wine-making principles, in many instances sufficient for three times the bulk of the juice already expressed. This fact suggested the question: As there are so many of these valuable properties left, and only sugar and water exhausted, why cannot these be substituted until the others are completely exhausted? It was found that the husks still contained sufficient of acids, tannin, aroma, coloring matter, and gluten. All that remained to be added was water and sugar. It was found that this could be easily done; and the results showed that wine made in this manner was equal, if not superior, to some of that made from the original juice, and was often, by the best judges, preferred to that made from the original must.
I have also practiced this method extensively the last season; and the result is, that I have fully doubled the amount of wine of the Norton's Virginia and Concord. I have thus made 2,500 gallons of Concord, where I had but 1,030 gallons of original must; and 2,600 gallons of Norton's Virginia, where I had but 1,300 gallons of must. The wines thus made were kept strictly separate from those made from the original juice, and the result is, that many of them are better, and none inferior, to the original must; and although I have kept a careful diary of wine-making, in which I have noted the process how each cask was made, period of fermentation on the husks, quantity of sugar used, etc., and have not hesitated to show this to every purchaser after he had tasted of the wine, they generally, and with very few exceptions, chose those which had either been gallized in part, or entirely.