• Please visit and share your knowledge at our sister communities:
  • If you have not, please join our official Homebrewing Facebook Group!

    Homebrewing Facebook Group

Counterpressure with warm beer/bottles?

Homebrew Talk

Help Support Homebrew Talk:

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

bentonre

Well-Known Member
Joined
Nov 14, 2008
Messages
139
Reaction score
2
Location
Allentown, PA
I've seen that it is generally recommended that when using a beergun or CPBF that the beer and bottles both be cold to minimize foaming. I have also seen that the foaming is due to the temperature difference. Has anyone tried ambient beer to ambient bottles? I have 3 kegs that are carbonated to the right CO2 volumes at ambient but I do not want to chill them as I don't want to bottle the whole keg and I can't keep them all cold until they get fully used. Just curious what I am getting myself into trying warm to warm.
Any help/experience is appreciated.
 
Shouldn't be a problem. I just think most people don't want to hassle with taking their kegs out of their kegerator to warm them.

Edit: I re-read this post and confused myself. You shouldn't have a problem with warm bottles on a cold keg if you wanted to do that. I always use room temp bottles with a poor mans cpbf and I never have foam issues.
 
I always bottle via BMBF with room temp bottles. Its always from a chilled, carbonated keg though. I can imagine that filling with warm beer might lead to foaming. CO2 is more apt to stay dissolved when the liquid is cold.
 
You will lose a ton of carbonation if the beer is warm. It's hard enough to keep the foam at bay when the beer is at 34F. You don't have to keep the keg cold indefinitely. Chill it down, bottle your beers and then let the keg warm again.
 
Thanks for all the input (and quick).

Bobby M (or others),
Any concern of "skunking what is left in the keg"?
 
Skunking is what happens when UV light reacts with hops in beer due to clear or green bottles. The warm/cold/warm thing is an urban myth. I think it got started when people tried drinking beer leftover on a keg handpump the day after a party. What they really meant to say was "oxidized" but skunked sounds so much cooler.
 
Thanks!
I've learned something new today (and it's related to homebrewing!).
I can now happily leave work and go drink some beer!
This forum is awesome!
 
Thanks for all the input (and quick).

Bobby M (or others),
Any concern of "skunking what is left in the keg"?

Just to add to what Bobby said, cooling and warming once or twice won't do anything. Multiple wide temperature swings are probably not the best and could decrease shelf life. As homebrewers, we really aren't too concerned with shelf life since we make relatively small batches that get consumed quickly.
 
Back
Top