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General Homebrew Discussion / Re: Does Anyone Know if Yeast Produce Acid While Cask Conditioning?
« on: February 21, 2012, 09:57:21 AM »
Vinegar-y smell/flavor probably comes from acetobacter (contaminating bacteria), which creates acetic acid. Yeast really don't produce acetic acid, even when they are abused. Bottle/keg conditioning definately has nothing to do with it.

