If you didn't know, pasteurization is a specific process of preserving food by heating it to a certain temperature. Not sure if there's a good substitute for that word in the way you're using it though (technically alcohol is distilled, but it's not distilled water like one would normally think of it. it's not really "purified" either. hmm)
ah shit, I should have looked up if beer itself is pasteurized. So-and-so Pasteur himself invented the process for beer and ale specifically (albeit around 1870, so before then I would be right)
