Facts About Champagne and Other Sparkling Wines

by Henry Vizetelly

The operation of bottling the wine next ensues, when the Scriptural advice not to put new wine into old bottles is rigorously followed. For the tremendous pressure of the gas engendered during the subsequent fermentation of the wine is such that the bottle becomes weakened and can never be safely trusted again. It is because of this pressure that the champagne bottle is one of the strongest made, as indicated by its weight, which is almost a couple of pounds. To ensure this unusual strength it is necessary that its sides should be of equal thickness and the bottom of a uniform solidity throughout, in order that no particular expansion may ensue from sudden changes of temperature. The neck must, moreover, be perfectly round and widen gradually towards the shoulder. In addition—and this is of the utmost consequence—the inside ought to be perfectly smooth, as a rough interior causes the gas to make efforts to escape, and thus renders an explosion imminent. The composition of the glass, too, is not without its importance, as a manufactory established for the production of glass by a new process turned out champagne bottles charged with alkaline sulphurets, and the consequence was that an entire cuvée was ruined by their use, through the reciprocal action of the wine and these sulphurets. The acids of the former disengaged hydrosulphuric acid, and instead of champagne the result was a new species of mineral water.

Most of the bottles used for champagnes come from the factories of Loivre (which supplies the largest quantity), Folembray, Vauxrot, and Quiquengrogne, and cost on the average from 28 to 30 francs the hundred. They are generally tested by a practised hand, who, by knocking them sharply together, professes to be able to tell from the sound that they give the substance of the glass and its temper. The washing of the bottles is invariably performed by women, who at the larger establishments accomplish it with the aid of machines, sometimes provided with a revolving brush, although small glass beads

are more generally used by preference. After being washed every bottle is minutely examined to make certain of its perfect purity.

With the different champagne houses the mode of bottling the wine, which may take place any time between April and August, varies in some measure, still the tirage, as this operation is called, is ordinarily effected as follows:—The wine is emptied from the casks into vats or tuns of varying capacity, whence it flows through pipes into oblong reservoirs, each provided with a row of syphon taps, on to which the bottles are slipped, and from which the wine ceases to flow directly the bottles become filled. Men or lads remove the full bottles, replacing them by empty ones, while other hands convey them to the corkers, whose guillotine machines are incessantly in motion; next the agrafeurs secure the corks by means of an iron staple, termed an agrafe; and then the bottles are conveyed either to a capacious apartment aboveground, known as a cellier, or to a cool cellar, according

to the number of atmospheres the wine may indicate. It should be explained that air compressed to half its volume acquires twice its ordinary force, and to a quarter of its volume quadruple this force—hence the phrase of two, four, or more atmospheres. The exact degree of pressure is readily ascertained by means of a manometer, an instrument resembling a pressure gauge, with a hollow screw at the base which is driven through the cork of the bottle. A pressure of 5¾ atmospheres constitutes what is styled a “grand mousseux,” and the wine exhibiting it may be safely conveyed to the coolest subterranean depths, for no doubt need be entertained as to its future effervescent properties. Should the pressure, however, scarcely exceed 4 atmospheres, it is advisable to keep the wine in a cellier aboveground that it may more rapidly acquire the requisite sparkling qualities. If fewer than 4 atmospheres are indicated it would be necessary to pour the wine back into the casks again, and add a certain amount of cane sugar to it, but such an eventuality very rarely happens, thanks to the scientific formulas and apparatus which enable the degree of pressure the wine will show to be determined beforehand to a nicety. Still mistakes are sometimes made, and there are instances where charcoal fires have had to be lighted in the cellars to encourage the effervescence to develop itself.

The bottles are placed in a horizontal position and stacked in rows of varying length and depth, one above the other, to about the height of a man, and with narrow laths between them. Thus they will spend the summer providing all goes well, but in about three weeks’ time the process of gas-making inside the bottles is at its height, and may cause an undue number of them to burst. The glucometer notwithstanding, it is impossible to check a certain amount of breakage, especially when a hot season has caused the grapes, and consequently the raw wine, to be sweeter than usual. Moreover when once casse or breakage sets in on a large scale, the temperature of the cellar is raised by the volume of carbonic acid gas let loose, which is not without its effect on the remaining bottles. The only remedy is at once

to remove the wine to a lower temperature when this is practicable. A manufacturer of the pre-scientific days of the last century relates how one year, when the wine was rich and strong, he only preserved 120 out of 6,000 bottles; and it is not long since that 120,000 out of 200,000 were destroyed in the cellars of a well-known champagne firm. Over-knowing purchasers still affect to select a wine which has exploded in the largest proportion as being well up to the mark as regards its effervescence, and profess to make inquiries as to its performances in this direction.

It is evident that in spite of the teachings of science the bursting of champagne bottles has not yet been reduced to a minimum, for whereas in some cellars it averages 7 and 8 per cent., in others it rarely exceeds 2½ or 3. In the month of October, the first and severest breakage being over, the newly-bottled wine is definitively stacked in the cellars in piles from two to half-a-dozen bottles deep, from six to seven feet high, and frequently a hundred feet or upwards in length. Usually the bottles remain in their horizontal position for about eighteen or twenty months, though some firms, who pride themselves upon shipping perfectly matured wines, leave them thus for double this space of time. All this while the temperature to which the wine is exposed is, as far as practicable, carefully regulated; for the risk of breakage, though greatly diminished, is never entirely at an end.