Ss Brewtech’s Biggest Baddest Holiday Giveaway Ever!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Slow Fermentation at Low Temperatures
Thread Tools
Old 02-15-2010, 08:26 PM   #1
Feedback Score: 0 reviews
Join Date: Feb 2009
Location: Charlotte, Michigan
Posts: 80
Likes Given: 4

Default Slow Fermentation at Low Temperatures

I brewed my first AG batch last weekend. I made a 2000ml yeast starter with 1 vial of WLP001. I used 13lbs 2-row, .5lbs crystal 40:, .5lbs white wheat and .5lbs carapils. I brewed outside, cooled the wort to 62 degrees, aerated the wort, and pitched the yeast into the carboy. There was still some yeast cake at the bottom the flask so I dumped a bit of wort in, shook it around and put it in the fermenter. I put the fermenter into a chest freezer I bought for fermentation. I left the fermenter in the chest freezer overnight with the temp controller set to 65 degrees. I don't know if it got warm enough in my house to bring the fermenter up to temperature so I put a pan of just-boiled water into the freezer to try to bring the temperature up. Now the fermenter is at room temperature, about 65 degrees. There is a nice layer of krausen on the surface of the beer but the airlock of bubbling VERY slowly. In the past I've used US-05 and fermented at warmer temps and the airlock went crazy. Is the slow fermentation simply due to the colder temperatures? Should I do something to get it going faster? Should I pitch another vial to be sure I get good attenuation? Any assistance would be greatly appreciated. Thanks!

hokenfloken is offline
Reply With Quote
Old 02-15-2010, 08:36 PM   #2
Feedback Score: 0 reviews
Join Date: Sep 2008
Location: Seattle
Posts: 1,372
Liked 21 Times on 14 Posts
Likes Given: 9


Nice layer of Krausen sounds good to me. Let it sit at 65F. There really isn't any need to pitch more yeast. Last time I fermented with that strain at 65F, with a starter, it took 9 days to reach final gravity. Stop fluctuating the temps and let it stabilize at 65F.
(~):} Just a little Furthur (~):}
jmo88 is offline
Reply With Quote
Old 02-15-2010, 08:42 PM   #3
...My Junk is Ugly...
Feedback Score: 0 reviews
BierMuncher's Avatar
Join Date: Jan 2007
Location: St. Louis, MO
Posts: 12,309
Liked 745 Times on 419 Posts
Likes Given: 268


Slow and steady fermentation is good.

You'll get a cleaner tasting beer with fewer esters and less chance of fusels.

My brewshop hovers at 60-62 this time of year so this is when brew like crazy...stock up and get all 20 kegs filled.

Once summer gets here and my shop gets to that 76-78 range...then it's on to the Belgians.
BierMuncher is offline
Reply With Quote

Thread Tools

Similar Threads
Thread Thread Starter Forum Replies Last Post
Fermentation Temperatures SacredBrew Beginners Beer Brewing Forum 2 03-05-2009 01:41 PM
Fermentation Temperatures davidsbrew Beginners Beer Brewing Forum 6 11-18-2008 09:10 PM
slow slow fermentation question !! WheaYaAt Beginners Beer Brewing Forum 6 09-07-2008 06:18 PM
Esters and fermentation temperatures Orangevango Cider Forum 1 08-02-2008 08:56 PM
Fermentation Temperatures mehron Beginners Beer Brewing Forum 6 01-14-2007 03:46 PM

Forum Jump

Newest Threads