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Yeasts are micro-organisms used in brewing to produce alcohol during the process of fermentation.

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To the best of my understanding of making beer, wort must first be properly aerated to provide oxygen for the yeast to multiply when first added to the wort. After all the oxygen is consumed, the … yeast switch from being aerobic to anaerobic and begin producing CO2 and alcohol. Having a lot of healthy yeast is important, but the goal is to get them all into an anaerobic state to produce alcohol …
asked Feb 18 '16 by Question Marks