Eli5: How did humans first manage to collect the bacteria used for fermentation?

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Like acetic acid bacteria

In: Biology

6 Answers

Anonymous 0 Comments

When you say bacteria, do you mean yeast?

Because yeast is everywhere. You can make a sourdough starter super easily at home. The people would make unleavened bread dough, and if it was left out, yeast would go to it. Then they continued to use that dough (generally just scraping the bowl at the end of making bread and keeping that leftover to add to the next time they made bread). Alcohol was the same thing, they just left out their drink and yeast would go to it

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