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Soapy Berliner & Gose, US-05, and brett dregs.... WTF?

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hirschb

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Someone below had a similar problem, but I don't think anybody gave a satisfactory answer, so I'm posting this in a new thread.
I made a split batch Berlinerweiss & Gose. I popped open one of the gose yesterday, and the aftertaste was horrible. Soapy, almost fatty, with an odd odor which I cannot fully describe. This could be caused by autolysis, as the beer was in primary about 3 months while I was waiting for the gravity to drop below 1.009 (which it never did). In the meantime, I put some Jester King dregs in both the gose and Berlinerweiss, so there is some brett in there. The soap flavor was much stronger in the gose, which also received a bit more dregs. If this problem was due to autolysis, I would expect that the brett should eventually clean up these flavors, right? Alternately, this batch was done with untreated tapwater, which could have been problematic (I just switched to a water filter). However, an IPA I made sans filter turned out fine. One other possible cause of the soapy flavor might have been due to stressed out yeast (US-05). Maybe the lacto screwed with the US-05, and produced the soapy flavor? It seems that other people with soap problems have used US-05 as well. Anyway, I'm wondering if anyone has some better way to determine which of these issues was the culprit (so I can avoid the problem in the future). I also would like to know if these beers need to be dumped, or whether they may improve over time. Ugh, ten gallons of ****!
 
I'm a soap maker. The definition of soap is "a salt of fatty acids".

So, sure, the breaking down of fatty acids in the trub would create soap.

I don't know much about brett, but I've never heard that it would ferment soap.

I've never heard of anybody getting good results removing soap or soap flavors from beer, but there is always hope, I guess!
 

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