New Giveaway - Wort Monster Conical Fermenter!

Home Brew Forums > Home Brewing Beer > General Techniques > Autolysis: fact or fiction




View Poll Results: Have you experienced yeast autolysis?
No, never had it happen to me 143 81.71%
Yes, with 2 to 3 weeks in the primary 1 0.57%
Yes, with 4 - 5 weeks in the primary 1 0.57%
Yes, but with 6 weeks or more in the primary 11 6.29%
WTF is autolysis??? 19 10.86%
Voters: 175. You may not vote on this poll

Reply
 
LinkBack Thread Tools Display Modes
Old 05-22-2007, 10:49 PM   #1
FlyGuy
Feedback Score: 0 reviews
 
FlyGuy's Avatar
Recipes 
 
Join Date: Jan 2007
Location: Calgary, Alberta
Posts: 3,618
Liked 122 Times on 40 Posts
Likes Given: 7

Default Autolysis: fact or fiction

OK, yes yeast autolysis is actually a potential concern (not fiction). But is it a substantial concern? I have been gradually moving away from secondaries and leaving my beer longer and longer in the primary. With up to 6 weeks in the primary, I still haven't perceived anything resembling autolysis. The more I investigate the topic, the more it seems that autolysis is awfully hard to produce.

So, the question is 'Have you experienced autolysis, and if so, how long did you leave your beer in the primary to achieve it?' Comments on the type of beer, yeast, fermentation conditions, etc. would be helpful if you have experienced it. If it was a one-time or rare event, perhaps that could be mentioned too. Thanks.



FlyGuy is offline
 
Reply With Quote Quick reply to this message
Old 05-22-2007, 11:29 PM   #2
boo boo
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jun 2005
Location: Hearts's Delight, Newfoundland
Posts: 4,172
Liked 28 Times on 24 Posts
Likes Given: 4

Default

Nope, never had a beer on the yeast long enough.



__________________

How do you BBQ an elephant....first you get your elephant....

boo boo is offline
 
Reply With Quote Quick reply to this message
Old 05-23-2007, 12:19 AM   #3
david_42
Feedback Score: 0 reviews
 
david_42's Avatar
Recipes 
 
Join Date: Oct 2005
Location: Willamina & Oak Grove, Oregon, USA
Posts: 25,650
Liked 130 Times on 124 Posts

Default

I've had it when I failed to clean out a fermenter. Took about two months, in the summer.

__________________

Remember one unassailable statistic, as explained by the late, great George Carlin: "Just think of how stupid the average person is, and then realize half of them are even stupider!"

"I would like to die on Mars, just not on impact." Elon Musk

david_42 is offline
 
Reply With Quote Quick reply to this message
Old 05-23-2007, 12:50 AM   #4
ajf
Senior Member
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
ajf's Avatar
Recipes 
 
Join Date: Oct 2005
Location: Long Island
Posts: 4,633
Liked 96 Times on 90 Posts
Likes Given: 39

Default

Never had a problem with autolysis, but I have left beers in the primary for about 6 weeks several times.

-a.

__________________
ajf is offline
 
Reply With Quote Quick reply to this message
Old 05-23-2007, 01:39 AM   #5
Torchiest
Feedback Score: 0 reviews
 
Torchiest's Avatar
Recipes 
 
Join Date: Nov 2006
Location: Houston, TX
Posts: 1,768
Liked 5 Times on 5 Posts
Likes Given: 5

Default

Never had a problem. The longest I've left a beer in primary was 31 days, and it was fine. Of course, it was 1.090 OG, so that may have helped.

__________________
WORLD DOMINATION BEER
Kegged
#48 Black Helicopter Porter #49 Pikemen Porter
Up Next:
#50 Imperious IPA
#51 Razz Buried
Torchiest is offline
 
Reply With Quote Quick reply to this message
Old 05-23-2007, 01:45 AM   #6
Bugeaterbrewing
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2007
Location: Nebraska
Posts: 206
Liked 1 Times on 1 Posts

Default

I leave 1.090+ beers in primary for 6-8 weeks on occasion and never have any problems with it.

Wayne
Bugeater Brewing Company

__________________
Bugeaterbrewing is offline
 
Reply With Quote Quick reply to this message
Old 05-23-2007, 02:48 AM   #7
nosnhojr
HBT_LIFETIMESUPPORTER.png
Feedback Score: 0 reviews
 
nosnhojr's Avatar
Recipes 
 
Join Date: May 2006
Location: Cary, NC
Posts: 164
Default

My last ale (a Highland Gaelic clone) sat in primary 63 days at around 65-70F with no problems. Only one data point, though.

__________________

on tap: raspberry melomel
primary: first all-grain!
nosnhojr is offline
 
Reply With Quote Quick reply to this message
Old 06-25-2009, 07:24 AM   #8
yorkbrew
Feedback Score: 0 reviews
Recipes 
 
Join Date: Sep 2007
Location: Bellingham, WA
Posts: 113
Likes Given: 7

Default

I just racked a beer to secondary, 1.072 og brewed on 1/21 (today is 6/24). I don't taste anything bad. As far as I'm concerned it's a warm sweet stout, as it should be.

__________________
yorkbrew is offline
 
Reply With Quote Quick reply to this message
Old 06-25-2009, 09:48 AM   #9
EvilTOJ
Feedback Score: 0 reviews
 
EvilTOJ's Avatar
Recipes 
 
Join Date: Dec 2005
Location: Portland, OR, Oregon
Posts: 6,468
Liked 34 Times on 28 Posts
Likes Given: 3

Default

My doppelbock sat in the primary at least 7 months and no autolysis. My barleywine sat in primary 5 months, no problems.

Now, I left a carboy out that had been racked, but still had the yeast cake in it for a few days in the hot sun. Oh yea, problems.

__________________

There is a very fine line between "hobby" and "mental illness."

EvilTOJ is offline
 
Reply With Quote Quick reply to this message
Old 06-25-2009, 10:43 AM   #10
MattHollingsworth
Feedback Score: 0 reviews
Recipes 
 
Join Date: May 2009
Location: Samobor, Croatia
Posts: 1,596
Liked 26 Times on 25 Posts
Likes Given: 34

Default

Had it once but I can't find the notes. From memory it was somewhere between 4 and 5 weeks in primary.



__________________
HOMEBREWING SINCE 1997
MattHollingsworth is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
Here's a fun fact... c.n.budz General Beer Discussion 24 09-24-2009 09:17 PM
fact or fiction? jockeys? isac777 Equipment/Sanitation 8 06-15-2009 10:00 PM
Two topics - fact or fiction iXanadu Beginners Beer Brewing Forum 5 02-10-2009 03:51 AM
Is there a way to calculate OG after the fact Ed_ Beginners Beer Brewing Forum 8 01-14-2009 02:27 AM