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Old 02-15-2013, 05:41 PM   #1
dierythmus
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My last brew had a pretty bad boil over. I'm brew extracts on a gas stove. What are the best ways to prevent them?

I'm going to try the spray bottle next time. Should I use simply water, or star san/water mix?

 
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Old 02-15-2013, 05:48 PM   #2
kelitore
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Cold water in a spray bottle is what I use

 
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Old 02-15-2013, 05:55 PM   #3
Torkermax
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Reduce heat and stir.

 
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Old 02-15-2013, 06:45 PM   #4
duboman
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+1 to the above, you can also use Fermcap-S or even baby drops or anything with simethicone or another product called Patcote 376 which is free of silicone. All are anti foam agents-there is a list of suitable substitutes somewhere on the site, can't remember the link though so try a search-I believe Revvy posted the list awhile back
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Old 02-15-2013, 08:21 PM   #5
seriousbeef
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How much head space are you giving yourself between liquid volume and the rim of the kettle? I just constantly stir vigorously until the foam begins to recede.

 
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Old 02-15-2013, 08:24 PM   #6
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^^That's what I've been doing. Then with partial mash,I start stiring just as the hot break begins to form. I can keep it down then. But a spray bottle of cold water at the ready is always a good idea.
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Old 02-15-2013, 08:52 PM   #7
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Most stoves can boil water at a lower setting than the hottest super duper nuclear melt down setting on the dial.

If your dial goes to say 8, put it on 7 or 6.5 no reason to blast it wide open, well you can but expect boil overs.

I've never come close to a boil over on the stove or propane. I do full 5 gal boils in a 7 gal pot and dont have issues. Heat control and paying attention go a long way.
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Old 02-15-2013, 09:13 PM   #8
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Mine go up to "9",so I turn it down to "8" when it starts to boil.That high setting is already slowing down the socket on one of my new burners.
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Old 02-15-2013, 09:20 PM   #9
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I came close with a big porter yesterday. My rear puckered a little. I reduced heat and was blowing like mad. Luckily no boil over.

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Old 02-15-2013, 11:17 PM   #10
BridgewaterBrewer
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Spray bottle with water works very well. Some people say an electric fan works great too. I've started using a pot watcher which also seems to help a lot. It's a stainless steel disk that turns all the little bubbles into a few large bubbles which rather than lift the foam up actually penetrate through it. You can still get a boil over though. Haven't tried fermcap but planning to get some soon.

 
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