Max time for diacetyl rest? - Home Brew Forums
Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Max time for diacetyl rest?

Reply
 
Thread Tools
Old 06-29-2010, 07:51 PM   #1
Ed_
Recipes 
 
Jan 2009
Birmingham Alabama
Posts: 71
Liked 1 Times on 1 Posts



Do any of you know if there is max amount of time that you should raise the temp on a lager for a diacetyl rest? I was thinking of letting an ale go through primary while my lager was going through a rest since the temps would be pretty much ideal for both but I'm not sure if the one to two weeks is too long for the lager.

Any help would be appreciated.


__________________
6.5 gal Primary 1: empty
6.5 gal Primary 2: empty
5 gal Secondary 1: Amarillo Pale Ale
5 gal Secondary 2: empty


On Tap
Keg 1: American Lagar
Keg 2:
Keg 3:
Keg 4:


On Deck:
Black Hole of Calcutta IPA v4

 
Reply With Quote
Old 06-29-2010, 08:11 PM   #2
Revvy
Post Hoc Ergo Propter Hoc
HBT_LIFETIMESUPPORTER.png
 
Revvy's Avatar
Recipes 
 
Dec 2007
"Detroitish" Michigan
Posts: 40,921
Liked 3180 Times on 1881 Posts


A lot of people, myself included do a 72 hour rest.


__________________
Like my snazzy new avatar? Get Sons of Zymurgy swag, here, and brew with the best.

Revvy's one of the cool reverends. He has a Harley and a t-shirt that says on the back "If you can read this, the bitch was Raptured. - Madman

I gotta tell ya, just between us girls, that Revvy is HOT. Very tall, gorgeous grey hair and a terrific smile. He's very good looking in person, with a charismatic personality... he drives like a ****ing maniac! - YooperBrew

 
Reply With Quote
Old 06-30-2010, 01:02 AM   #3
menschmaschine
Recipes 
 
Jun 2007
Delaware
Posts: 3,272
Liked 41 Times on 33 Posts


I wouldn't be comfortable doing a D-rest that long, but I'm particular about my lagers. I would at least transfer it to the lagering vessel after the normal timeframe (2-3 days) to get it off the yeast. Increased temperatures can accelerate yeast cell decay, potentially causing off-flavors.
__________________
END TRANSMISSION

 
Reply With Quote
Old 07-01-2010, 09:46 PM   #4
zman
HBT_LIFETIMESUPPORTER.png
 
zman's Avatar
Recipes 
 
Apr 2008
Denver.
Posts: 2,650
Liked 21 Times on 21 Posts


I did Mutilated1's bitburger clone, http://www.homebrewtalk.com/f58/cats...ilsner-100625/, and was not super careful about checking hydro readings. After 1.5 weeks it was down to 1.012. I tasted the sample and did not notice any off flavors related to Diacetyl but I did a rest on Tuesday morning and I am going to secondary it tonight and start lagering. Is it possible for off flavors to develop when lagering or am I pretty much good to go?
__________________
www.kroc.org

 
Reply With Quote
Old 07-02-2010, 12:38 AM   #5
menschmaschine
Recipes 
 
Jun 2007
Delaware
Posts: 3,272
Liked 41 Times on 33 Posts


Quote:
Originally Posted by zman View Post
Is it possible for off flavors to develop when lagering or am I pretty much good to go?
It's unlikely, but there are a couple possibilities. Diacetyl can develop if oxygen is introduced, such as from splashing during transfer. The other possibility is a developing infection. So, stay sanitary and transfer the beer "quietly" and you should be good to go.


__________________
END TRANSMISSION

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
Diacetyl Rest Glibbidy General Techniques 12 06-21-2016 09:11 AM
What else does a diacetyl rest do? menschmaschine Brew Science 13 02-12-2012 02:37 PM
1st time Diacetyl Rest Question albeerquerquean General Techniques 2 02-27-2010 09:41 PM
Is this the right time for my Diacetyl rest? kingoslo Beginners Beer Brewing Forum 7 10-21-2009 04:06 PM
Diacetyl rest time, skunking risk Finn General Techniques 12 02-11-2008 05:28 AM


Forum Jump