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What is Fermentation of Liquor?

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Fermentation tank at the Maker's Mark Bourbon Whiskey Distillery.

Fermentation tank at the Maker's Mark Bourbon Whiskey Distillery.

Photo Credit: © Shannon Graham

Definition: A process that uses yeast to break down sugar molecules into carbon dioxide gas and ethyl alcohol. This chemical change is achieved because the yeast rapidly reproduces itself in any solution that contains sugar.

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