by Staff Writer - C. Barnett | January 03, 2012

Fermentation is the process that turns grapes or grape juice into wine. The process is achieved by adding yeast to crushed grapes which turn their natural sugar into alcohol.

Enzymes in the yeast convert sugar into alcohol and carbon dioxide. The longer the grape is fermented, the higher the alcohol content in the wine will be. The elements required for the fermentation process are the correct sugar content, the correct amount of yeast, the right amount of oxygen and the quality of the grapes. The combination of these ingredients is what determines the taste and alcohol content of the wine. The fermentation process of wine is both an art and a science.

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