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Old 04-27-2012, 04:09 PM   #1
Feb 2012
Carbondale, CO
Posts: 244
Liked 21 Times on 16 Posts


I have a brew I bottled a few weeks ago and found rings of crud in the neck of the bottle just above beer line. Is this a sign of infection? This happened in 3 bottles and none of the others. I got a weird sour like smell from them. Others from the same batch tasted fine.



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Old 04-27-2012, 04:45 PM   #2
Sep 2011
Posts: 1,189
Liked 26 Times on 24 Posts

Sounds like a safe bet to me. Sourness is almost always indicative of an infection. Were these bottles reused? I have to imagine there was something left over in these bottles or they weren't cleaned/disinfected as well as the others. Inconsistent infections would indicate something wrong in the bottling process. If the infection happened somewhere else, it would affect everything, rather than select bottles.

Did you check all the bottles? If there are other infected ones, you'll want to refrigerate and/or drink them right away. Infections can ferment significantly lower than yeast, so they can cause bottlebombs.

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