Fermentation, champagne method

Grape Liquors. In addition to wine, grapes can be used to produce a variety of other liquors. Champagne and sparkling wine are made either by injecting carbon dioxide into already-fermented wine or by adding more yeast and sugar to the wine to induce a second fermentation process. With the latter method, the wine is then capped in a special container that traps the carbon dioxide that is released as a by-product of fermentation. 

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