What are the signs of an infected batch of brew? I haven't yet or hope I've never had an infection..
mikeho said:
esarkipato said:I recently read papazian's first book (a little late!) and he mentioned that unsanitary brewing will affect of the flavor of the beer of course, but sometimes it's hard to tell if your off flavors are from slight infection or something else (like a crappy recipe!). He mentioned that a good indicator of infection is that there will be a ring around the neck of the bottle at the line of the liquid. I checked some of mine, and sure enough some of the questionable batches had the line and most did not.
Could that ring just be a little bit of protein deposits?
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