Yeast Cake...How Long? - Home Brew Forums
Register Now For Free!

Home Brew Forums > Home Brewing Beer > General Techniques > Yeast Cake...How Long?

Reply
 
Thread Tools
Old 12-22-2007, 01:09 AM   #1
gwood
Senior Member
HBT_LIFETIMESUPPORTER.png
 
gwood's Avatar
Recipes 
 
Oct 2007
Los Angeles, CA
Posts: 573
Liked 1 Times on 1 Posts



How long have folks waited to pitch over a cake? I have one that has been sitting in the primary for two weeks now. I've got a clean airlock on it and it's been sitting at 55F the whole time in my sanitized chest freezer.

Any reason I shouldn't pitch over it?

 
Reply With Quote
Old 12-22-2007, 03:36 AM   #2
WBC
 
WBC's Avatar
Recipes 
 
Jun 2007
La Puente, CA, California
Posts: 2,164
Liked 8 Times on 8 Posts


You can transfer the beer out and transfer wort in and it will take right off. No waiting required. Be sure to be sanitary with everything you touch so as not to infect it. Lots of brewers do this all the time.
__________________
Cheers,
WBC

Fermentor 1: Bill's House Ale II, Fermentor 2: German Helles, Fermentor 3: Bill's Schworzbier (Black Bier)
Tap 1: Bill's House Ale II, Tap 2: German Hefewizen, Tap 3: Nut Brown Ale
Future Brews: Stone IPA Clone, Blonde Ale, Budvar Clone, Newcastle Clone
New toy: Blichmann 27 gallon fermentor


“If you find yourself in a hole, the first thing to do is stop digging”

“Good judgment comes from experience, and a lotta that comes from bad judgment”

 
Reply With Quote
Old 12-22-2007, 04:31 AM   #3
shafferpilot
HBT_LIFETIMESUPPORTER.png
 
shafferpilot's Avatar
Recipes 
 
Sep 2007
Cincinnati OH
Posts: 1,579
Liked 20 Times on 19 Posts


I think he's saying the beer was transfered two weeks ago and the cake is still there. As long as it hasn't dried out, I don't see why you couldn't put some fresh wort on top of it.
__________________
A great man knows that he knows NOTHING

 
Reply With Quote
Old 12-22-2007, 11:53 AM   #4
Bob
 
Bob's Avatar
Recipes 
 
Nov 2007
Christiansted, St Croix, USVI, US Virgin Islands
Posts: 3,927
Liked 142 Times on 105 Posts


I concur that, if the cake isn't too dry, you'll be all right.

In future, know that yeast is best stored under beer. If there's still a centimeter or two of beer covering the yeast cake, I shouldn't worry - nor should I muck about in it until I'm ready cast onto it! The only thing you need to consider at that point is autolysis from the length of time it spends sitting around. I don't like to keep it sitting around for more than 10 days.

I would do two things: stir that couple cm of beer into the cake to make a slurry, and let the yeast warm up to pitching temperature. Giving the yeast too much of a temperature shock is a bad thing.

Of course, if the yeast is from stout and you're brewing a kolsch...But you've probably figured that out already.

Cheers,

Bob
__________________
Brewmaster
Fort Christian Brewpub
St Croix, US Virgin Islands

 
Reply With Quote
Old 12-22-2007, 12:43 PM   #5
Orfy
For the love of beer!
HBT_LIFETIMESUPPORTER.png
 
Orfy's Avatar
Recipes 
 
Sep 2005
Cheshire, England
Posts: 11,732
Liked 95 Times on 62 Posts


I've waited 2 weeks.
I made sure I left a layer of wort over the yeast cake to "Protect" it.
All was fine.
__________________
GET THE GOBLIN
Have a beer on me.

 
Reply With Quote
Old 12-22-2007, 09:53 PM   #6
newbrewoob
Recipes 
 
Nov 2007
old orchard beach maine
Posts: 18

OK--Do you guys mean to literally pour the 'new wort' onto the cake/slurry that has been sitting in a 'used' fermentor?

I guess my question is:
How/ do I clean the "gunk" (off the sides of the primary without contaminating the cake/slurry that is in the bottom of the bucket?

 
Reply With Quote
Old 12-23-2007, 02:42 AM   #7
Grimsawyer
Recipes 
 
Mar 2006
Salem, OR
Posts: 877
Liked 5 Times on 5 Posts


Quote:
Originally Posted by newbrewoob
OK--Do you guys mean to literally pour the 'new wort' onto the cake/slurry that has been sitting in a 'used' fermentor?

I guess my question is:
How/ do I clean the "gunk" (off the sides of the primary without contaminating the cake/slurry that is in the bottom of the bucket?
You don't. You wait till after the batch that is being poured onto it is done then clean it as you usually do. You don't want to risk contaminating anything! that gunk isn't harmful to beer.
__________________
"I feel sorry for people who don't drink. They wake up in the morning and that's as good as they're going to feel all day." -Dean Martin
Quote:
Originally Posted by TheFlyingBeer
...no sense hauling empty carboys around when full ones take up just as much space. :)

 
Reply With Quote
Old 12-23-2007, 07:43 PM   #8
newbrewoob
Recipes 
 
Nov 2007
old orchard beach maine
Posts: 18

OK That makes sense now...thanks!

 
Reply With Quote
Old 12-23-2007, 09:21 PM   #9
mrk305
Beer Dude in the Sunset
HBT_LIFETIMESUPPORTER.png
 
mrk305's Avatar
Recipes 
 
May 2007
Georgia
Posts: 1,708
Liked 13 Times on 13 Posts


Get ready for a fast ferment! I transfered a batch of Edwort's Haus Pale Ale to secondary and pitched a fresh batch onto that yeast cake and it started rattling the airlock in ten minutes. I quickly rigged a blow off hose for that one.

 
Reply With Quote
Old 12-24-2007, 05:14 PM   #10
Got Trub?
Recipes 
 
Apr 2007
Washington State
Posts: 1,538
Liked 10 Times on 8 Posts


I agree with the above posts that your yeast is likely fine. I would recommend you calculate an appropriate pitch though. Much of the flavour imparted by yeast is done during the growth phase - you won't get that with an overpitch of yeast as they go right into fermentation. Check out:

http://www.mrmalty.com/calc/calc.html

GT

 
Reply With Quote
Reply
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
How long before you can't reuse a yeast cake? jmooney Cider Forum 1 04-02-2009 05:07 PM
How long can a yeast cake sit? Jonnio Beginners Beer Brewing Forum 7 10-19-2008 05:23 AM
Too long on the yeast cake? Sea General Techniques 5 11-12-2007 04:08 PM
How long should the yeast cake.... Dave the Brewer Beginners Beer Brewing Forum 7 09-19-2007 07:51 PM
How long will yeast cake last... McCall St. Brewer General Techniques 11 01-22-2007 04:28 AM


Forum Jump