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Spontaneous Fermentation

Term
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Something that may surprise you -- you can find up to 50,000 yeast particles on a single wine grape, naturally. This means that if you left a pile of freshly picked grapes in a bowl on your counter, it will naturally begin the fermentation process -- where yeast converts the grape sugar to alcohol. Most winemakers use commercial yeasts to better control the process, however, a growing handful uses "native yeast" to craft wines from "wild" or "spontaneous" fermentation.