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It could be an infection, although there doesn't appear to be anything wrong in the pictures. Maybe you just don't like the style?


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Sour, astringent and vinegary. Definitely sounds like an infection. Lactic and acetic acid also both have higher specific gravity than water or alcohol, so that's probably why your gravity went up between weeks two and three. Lost cause? I don't know, can you stand to drink it? If not, it's certainly not going to get any better with time. What is your ...


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I've had two beers in about 100 sour on me (that weren't intended; I've also done several intentionally soured beers). It's a bummer, but not something I would throw out. Especially if it's a lemon-vinegar sour; it can be refreshing. They usually take a bit longer to bottle carbonate. Clean after use, sanitize before use and this shouldn't happen, but dust ...


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From http://beersmith.com/blog/2012/08/12/sour-off-flavors-in-home-brewed-beer "Acetobacter produces acetic acid instead of lactic acid. Acetic acid is the major component in vinegar so it if you have a strong vinegar flavor in your beer it is very likely due to Acetobacter. Interestingly, acetobacter requires both the bacterial infection to occur and also ...



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