Crash cool...How and why and where and who? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > General Techniques > Crash cool...How and why and where and who?

Reply
 
Thread Tools
Old 12-01-2008, 06:01 PM   #1
DrDuckbutter
 
DrDuckbutter's Avatar
Recipes 
 
Mar 2008
Madbury, NH, New Hampshire
Posts: 57
Liked 1 Times on 1 Posts



i have searched for "crash cooling" can anyone just breifly explain the how to of this. I assume you do it to stop yeast fermentation and possibly to drop the yeast to the bottom of your fermenter quicker???

Thanks
I appreciate any help
__________________
"witty quote here"

Dr Duckbutter

 
Reply With Quote
Old 12-01-2008, 06:05 PM   #2
BigKahuna
Senior Member
HBT_LIFETIMESUPPORTER.png
 
BigKahuna's Avatar
Recipes 
 
Feb 2008
Eastern Colorado
Posts: 5,970
Liked 52 Times on 45 Posts


HOW= GET IT COLD! like in the fridgerator....the colder the better.
Why = Drop the crap that's in suspention!
Where = ANY place that will fit your fermenter and is below say....45F?
Who = Anyone that wants to clear their beer, mead, wine or cider.
__________________
Seriously. I'm here for BEER
It's Not The Size Of Your Rig That Counts....It's How Often You Use It.

 
Reply With Quote
Old 12-01-2008, 06:05 PM   #3

Crash-cooling will help the yeast flocullate and fall out of suspension faster. Combined with a fining agent like gelatin or isinglass, it can dramatically clear the beer. Crash-cool after fermentation is finished and you've let the beer sit on the yeast for several weeks. I crash-cool in my keezer if I have the room, usually around 37-39 degrees for a minimum of 3 days, but usually it goes weeks if I rack to the keg and cold-condition.


 
Reply With Quote
Old 12-01-2008, 06:06 PM   #4
Yooper
Ale's What Cures You!
HBT_ADMIN.png
 
Yooper's Avatar
Recipes 
 
Jun 2006
UP of Michigan, Winter Texan
Posts: 69,763
Liked 8031 Times on 5610 Posts


Well, no. It doesn't work to halt fermentation. Fermentation would just start up again when it warmed up. It works to help clear the beer by dropping out particles that can cause chill haze, as well as other proteins and some yeast that cause cloudy beer.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006

 
Reply With Quote
Old 12-01-2008, 06:10 PM   #5
BigKahuna
Senior Member
HBT_LIFETIMESUPPORTER.png
 
BigKahuna's Avatar
Recipes 
 
Feb 2008
Eastern Colorado
Posts: 5,970
Liked 52 Times on 45 Posts


Quote:
Originally Posted by YooperBrew View Post
Well, no. It doesn't work to halt fermentation.
I have heard of people indicating that they are going to try and stop fermentation...in a cider...by crash cooling when the desired sweetness level is reached. That scares the hell out of me! I'm in 100% agreement with Yooper. Crash Cooling is NOT a reliable means to stop fermentation.
__________________
Seriously. I'm here for BEER
It's Not The Size Of Your Rig That Counts....It's How Often You Use It.

 
Reply With Quote
Old 12-01-2008, 06:17 PM   #6
DrDuckbutter
 
DrDuckbutter's Avatar
Recipes 
 
Mar 2008
Madbury, NH, New Hampshire
Posts: 57
Liked 1 Times on 1 Posts


so i could just keg it, then let it "crash cool" for a few days then hook up the co2??
thanks
__________________
"witty quote here"

Dr Duckbutter

 
Reply With Quote
Old 12-01-2008, 06:23 PM   #7
Yooper
Ale's What Cures You!
HBT_ADMIN.png
 
Yooper's Avatar
Recipes 
 
Jun 2006
UP of Michigan, Winter Texan
Posts: 69,763
Liked 8031 Times on 5610 Posts


Quote:
Originally Posted by DrDuckbutter View Post
so i could just keg it, then let it "crash cool" for a few days then hook up the co2??
thanks
Sure, you could do that. That will work. Crash cooling it means cooling it fast (like in a fridge) so that the floaties are encouraged to fall out.
__________________
Broken Leg Brewery
Giving beer a leg to stand on since 2006

 
Reply With Quote
Old 12-01-2008, 06:27 PM   #8
McKBrew
 
McKBrew's Avatar
Recipes 
 
Oct 2006
Hayden, Idaho
Posts: 8,204
Liked 35 Times on 30 Posts


I typically crash cool in primary and then rack to the keg to get the clearest beer. Crash cooling is also a great time to add gelatin if you decide to go that route.
__________________
Make Beer, Not War.

 
Reply With Quote
Old 12-01-2008, 09:15 PM   #9
IrregularPulse
Hobby Collector
HBT_LIFETIMESUPPORTER.png
 
IrregularPulse's Avatar
Recipes 
 
Nov 2007
Posts: 51,511
Liked 3519 Times on 3330 Posts


Quote:
Originally Posted by DrDuckbutter View Post
so i could just keg it, then let it "crash cool" for a few days then hook up the co2??
thanks
like Yoop said, you could do that. BUT I would crash cool n the fermenter, THEN trasnfer. This leaves all the sediment behind. Leaving no chance for it to get stirred up while drawing pints.
__________________
Tap Room Hobo

I should have stuck to four fingers in Vegas.

 
Reply With Quote
Old 12-01-2008, 09:44 PM   #10
john from dc
Recipes 
 
Jan 2008
Posts: 394
Liked 6 Times on 6 Posts


yeah, if i had room in the kegerator for my primaries (without removing both kegs!) i'd definitely crash cool in the primary. the more you leave behind the better.

given what i'm working with though, i just let the beers clear on their own in the primary (for normal gravity non-belgians that takes about three weeks) then keg them and keep them cold for a week at least. i hook them up to the gas at the beginning of the week so that they're pretty well carbed by the end. if you do this you don't want to use the "shake the keg" carbing method, as it'll mix up all that stuff you crashed out.

after a week in the cold the first pint usually has some sediment (though not enough to make it unappealing to my tastes) and then it's crystal clear beer til the last pint, which gets cloudy again.

reddibaggie Likes This 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
To crash cool then bottle... TheMan General Techniques 31 08-31-2009 06:19 PM
long crash cool annasdadhockey General Techniques 3 07-12-2009 11:52 PM
Crash Cool How To cwhill General Techniques 6 05-19-2008 09:51 PM
After crash cool.... Pike Beginners Beer Brewing Forum 1 04-22-2008 09:00 PM
DO I need to crash cool? bulldogxray Bottling/Kegging 3 11-27-2007 12:35 AM


Forum Jump