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In baking yeast is used typically as a leavening agent, meaning it causes the bread to rise. The yeast digests sugars from the bread dough and produces carbon dioxide, which raises the bread.

In brewing, yeast serves two purposes: producing alcohol from the sugars in malt, and--in bottle or cask-conditioned beers--in carbonation. The yeast digests some of the sugars from the malt and produces alcohol and carbon dioxide (and various other molecules). During the fermentation process the carbon dioxide is the byproduct and is bled off to the atmosphere. For bottle-conditioned beers, the carbon dioxide from the yeast is forced into suspension in the liquid and causes the beer to be carbonated.

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15y ago
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12y ago

In food it had a chemical reaction and causes it to rise i.e. bread. Yeast has a chemical reaction and rises over night then you bake it to be light and fluffy.

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Q: Why is yeast important in alcoholic drinks?
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