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Small-Scale Question Sunday for February 12, 2023

Do you have a dumb question that you're kind of embarrassed to ask in the main thread? Is there something you're just not sure about?

This is your opportunity to ask questions. No question too simple or too silly.

Culture war topics are accepted, and proposals for a better intro post are appreciated.

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During WW 2 it was fairly common, and apparently somewhat successful, for prisoners in the Pacific to cultivate yeast to prevent B1 and B3 deficiencies. I'm not sure how many of the other vitamins were known at the time. So primitive fermentation is viable in some circumstances.

On the other hand, alcohol is an anti-vitamin for at least some of the B-vitamins in beer. For example, alcoholics are prone to B1 deficiency.