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Old 02-10-2013, 06:03 PM   #1
madcowbrewing
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Default Boil intensity

So I boil in a half barrel converted keg and I always seem to have trouble with potential boil overs. I have seen ten gallon batches done in these and want to go from five to ten gallon batches. Am I over boiling? What intensity should the boil be?


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Old 02-10-2013, 06:05 PM   #2
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I nice rolling boil is sufficient. What is your boil off rate? I think 10 to 15 % is about the norm.


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Old 02-10-2013, 06:09 PM   #3
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Crud man 7 or 8 gallons and you are boiling over or close to it. Once you have had the hot protein break you can back it off to a nice rolling boil or something that matches what you need to boil off to hit your volumes. With my set up in a pony keg the hot break happens before it even comes close to boiling over and then I back the heat off a little till the boil kind of rolls around the keg.
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Old 02-10-2013, 07:27 PM   #4
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The goal is to keep the liquid moving and the hops and other stuff moving around not stagnant..you'd be surprised how small of a boil you really need to achieve this.
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Old 02-10-2013, 08:14 PM   #5
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Quote:
Originally Posted by FuzzeWuzze View Post
The goal is to keep the liquid moving and the hops and other stuff moving around not stagnant..you'd be surprised how small of a boil you really need to achieve this.
Thanks for the info. I'm a newbie and thought it was necessary to have a vigorous boil the whole time. Do you get an effective hot break if you get it boiling but not a real rolling boil?
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Old 02-10-2013, 08:16 PM   #6
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Thanks for the info. I'm a newbie and thought it was necessary to have a vigorous boil the whole time. Do you get an effective hot break if you get it boiling but not a real rolling boil?
No, not really.

You need to watch it like a hawk until after the hot break, plus using Fermcap helps. After the hotbreak it won't boil over.

But I've boiled over a 5 gallon batch in a keg, so it's definitely possible! I turned my back for a minute, and over it went.

After the hot break, you can back it down a bit as long as it's still a rolling boil.


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