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Fermcap S is a foam control agent used to reduce foaming during the boil and during fermentation. This silicone based anti-foam drops out after fermentation with the yeast and trub.

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Customer Reviews

WOW, better than expected Review by James
So I had never heard of this until reading about on some site and thought I would give it a shot. I don't need it for my fermentation because I use a fermenter with plenty of head space, but I used it in my starter, and wow a full 2 liter starter in my flask and not even close to a boil over. Wish I had known about this stuff back when I did 5 gal in a 6.8 gal pot, and had to be very cautious to prevent boil overs.

This stuff works great to prevent excessive boil foam. (Posted on 12/3/2017)

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