What does fermentation do to ethanol?

Question: What does fermentation do to ethanol?

Answer: Ethanol is produced by fermentation, there is not any fermentation done to ethanol. Fermentation is a process where yeast, a single celled organism, is used to convert sugar or starch to alcohol. Various strands of yeast have been developed or breed to work optimally with different kinds of sugars and starches. Ethanol fuel is most commonly fermented using corn and yeast.

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