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Home Brew Forums > Home Brewing Beer > General Techniques > Let's talk about Foam Control drops (aka Fermcap)
View Poll Results: What do you think of Foam Control/Fermcap Drops?
I've tried it -- love the stuff! 399 31.59%
I've tried it -- meh. 48 3.80%
I haven't tried it, but mean to. 530 41.96%
I haven't even heard of this before. 152 12.03%
Don't put that in my beer -- Reinheitsgebot baby! 134 10.61%
Voters: 1263. You may not vote on this poll

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Old 12-03-2009, 01:02 AM   #121
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++ on using for starters. I've ruined apartment stoves making them, finally got the foam control when I got my own place.

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Old 12-04-2009, 04:53 PM   #122
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If you use fermcap in the boil do you need to put more of it into the fermenter to prevent the blow off or is the amount added to the boil sufficient?

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Old 12-04-2009, 05:58 PM   #123
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Quote:
Originally Posted by Schwoopty View Post
If you use fermcap in the boil do you need to put more of it into the fermenter to prevent the blow off or is the amount added to the boil sufficient?
Yes.

Fermcap stays on the top of the brew in the kettle. It will stay behind in the kettle when transferred to your fermenter. 1-2 drops per gallon would have to be added to the beer when in your fermenter.
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Old 12-04-2009, 06:13 PM   #124
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Ive used Fermcap in my last several batches and it works as advertised. HOWEVER, I am trying to troubleshoot this strange off flavor I have been having in the (how do I best describe this) my "Pre burps" taste kind of strange since I started using it. I bought a bigger kettle as well as FC (kind of redundant) but I notice that 'plastic-y' taste on my last few batches. Thus far, this is the only known thing that has changed in my brewing process.
I guess Ill see when this next batch comes out of the primary that I didnt use FC in the boil for.
-Me

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Old 12-04-2009, 08:01 PM   #125
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Plastic (phenolic) off-flavours are generally a problem with chlorinated water or yeast/fermentation. I suspect it is purely coincidental that these popped up at the same time that you began using fermcap. The active ingredients in fermcap are non-reactive and should never make it in your glass.

You could try alternating between using and not using fermcap in your next 4 or 5 batches to see if the pattern holds. That might help eliminate coincidences a bit.

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Old 12-04-2009, 08:21 PM   #126
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I didn't read all 13 pages of posts to this thread so if this is a repeat of info I'll say sorry in advance.

From Midwest Supplies website:

Used in the fermenter, it increases the bitterness of your beer (retained IBUs) by about 10%!

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Old 12-04-2009, 08:21 PM   #127
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Yeah, Joe, investigate a little further. I've used Fermcap for many years and have never had any plastic flavors or aromas in my beer (or ever had anyone comment to that effect).


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Old 03-02-2010, 08:51 PM   #128
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so I do a MSDS search on the stuff:
http://www.yesmsds.com/chemicals2/ca...date/index.asp
So what is FermCap??

The MSDS says it's an emulsion of Dimethylpolysiloxane (E900) using food grade
emulsifier

So I google Dimethylpolysiloxane
All I really learn is it's got a lot to do with silicone.

Silicone is funny stuff. Put a drop on a concrete floor and it wants to spread itself out one molecule thick so you get an eventual coverage of like 30 feet diameter or so. It's also got electrical properties.

I'm sure there is so much in food and everywhere else that a little more won't mean much. But still............................................. ...........

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Old 03-02-2010, 08:56 PM   #129
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Quote:
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I'm sure there is so much in food and everywhere else that a little more won't mean much. But still............................................. ...........
If used properly, it will never even make it into your finished beer. It is also very inert stuff -- they even use it to make de-gassing drops for infants.

I would worry more about that aluminum pot you boil your wort in, or those brass fittings on your mash tun!!!

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Old 03-02-2010, 09:10 PM   #130
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I have used the five star equivalent of fermcap in my boil kettle, and it really didn't seem to do anything. It still boiled over, or was going to. I didn't notice any difference whatsoever.

I also tried it in my corny keg fermenter and it blew off just the same.

Was mine just defective or what?

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