New answers tagged open-fermentation
Ethanol boils at 78.4C water boils at 100C, impurities in solution increase further the boiling point of these solutions. Unless you are heating the solution to >50C the rate of evaporation will be negligible. The strong surface tension of water also limits the evaporation from solutions. Also you have to think of the surface area to volume ratio of an open ...
Alcohol doesn't evaporate that quickly. We might as well ask how the water stays in the beer too.
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