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Anyone fermenting sours in corny kegs?

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KirkMN

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Oct 30, 2010
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Location
Minneapolis
I am using corny kegs for fermentation vessels and was wondering if they'd be good to use for sours too.

Does being able to see the pellicle add a lot of value?
 
It adds an interest factor for me, but the beer doesn't come out differently because I can see it, Schroedinger notwithstanding.
 
It's not the best option. You can leave a carboy and traditional airlock alone with less mess and less worry.
 
It adds an interest factor for me, but the beer doesn't come out differently because I can see it, Schroedinger notwithstanding.

you have beer in a vessel, and have pitched yeast. Until you open the vessel and check the gravity, it simultaneously both has and has not reached fg.
 
If you purge the corny before racking and after ( just a little, not trying to carb it) then odds are you will not have a pellicle. Having a pellicle just means your beer is being exposed to oxygen, it is not indicative of making a good sour.
 
I believe Palmer mentioned that he ages his sours in kegs on some episode of Brew Strong.
 
I ferment in carboys, secondary in carboys for 6 months or so, then transfer to keg for extended aging. When the sour starts hitting the sweet spot, I fill bottles from keg and drop a sugar drop or two in the bottle and carbonate. I can fill individual bottles this way and keep bulk aging.
 
Perhaps, not the answer you're looking for, but I think corny kegs are great for sour mashing because you can add CO2 and seal it up pretty well. Plus, in the summer in a hot climate, you can maintain high temps pretty well with a couple hacks. Otherwise, for long-aged sours, I prefer the clarity of glass.
 
I secondary/bulk age all my sours in corny kegs. Just easier for me. I like the amount of space they take up. I like that I can take samples without having to open up the vessel and allow oxygen in. Just throw a short picnic tap on, grab a sample, and disconnect. If I want to bottle, I can force carb it in the keg and then bottle. It takes some of the guesswork out of bottle priming sours.

I don't know if they form a pellicle in the keg. Probably not. I purge with CO2 prior and I never open them up to find out. Pellicles are cool to look at and admire, but a pretty pellicle doesn't necessarily mean a pretty beer.
 
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