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Old 06-14-2011, 04:51 PM   #1
May 2009
Posts: 803
Liked 56 Times on 43 Posts

During my last brew session, I managed to run out of propane with no spare cylinder and about 20 mins left in a 90 min boil. I just continued as planned figuring I must be getting some kind of hop utilization even if it wasn't boiling as the temperature at the end was still about 190 degrees. It'll be a couple of weeks before I see if I have anything drinkable or not, but in the mean time, is there some way to guesstimate my IBUs?

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Old 06-14-2011, 07:19 PM   #2
Feb 2011
Mt Vernon, NY
Posts: 98

you're good. you did an extended boil so as long as the bittering hops went in during the beginning of the boil, i'd say you're at your target, or close to it. if you're saying that you added an 1oz at flameout hoping to have boiled it an extra 20 mins, you're not going to get the IBUs from that last addition. what you will get, though, is aroma.

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Old 06-14-2011, 07:26 PM   #3
nutty_gnome's Avatar
Jan 2009
Princeton, Nj
Posts: 1,381
Liked 124 Times on 98 Posts

Use beersmith or one of the online calculators to model what happened and see what the difference is in calculated IBUs. If you aded hops when or after the flame went out, you will get some IBUs and, depending upon the hop, lots of flavor.
It could be worse.

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Old 06-14-2011, 09:01 PM   #4
May 2010
Wixom, Michigan
Posts: 609
Liked 22 Times on 20 Posts

I had something similiar happen to me last brew -ran out of propane 15 minutes into the boil. Took me 20 minutes to get another tank and resume boiling. I call it doing a "boil rest" haha. Beer seems fine.
Vir sapit qui pauca loquitur

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Old 06-15-2011, 04:49 PM   #5
Jan 2010
Medford, MA
Posts: 4,126
Liked 126 Times on 121 Posts

IIRC, there is some hop utilization >150F, the rate just slows down alot the colder it gets.

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