Spike Brewing 12.5 Conical Fermenter Giveaway - Enter Now!

Home Brew Forums > Home Brewing Beer > Fermentation & Yeast > Question about reusing a yeast cake

Reply
 
LinkBack Thread Tools
Old 01-18-2013, 07:24 PM   #1
fatnoah
Feedback Score: 0 reviews
Recipes 
 
Join Date: Mar 2012
Location: Chicago, IL
Posts: 152
Liked 14 Times on 14 Posts

Default Question about reusing a yeast cake

I've read a lot about people reusing a yeast cake from one batch to ferment a second batch (usually the first batch is low/moderate gravity and the second batch is high gravity). I get that you want the yeast strain to be appropriate for both beers.
My question is more of a technical nature. After you rack the first beer off the yeast cake, what do you do next? Shake the cake up with the dregs? Just rack the second beer right on top? Do you rack the second beer and then shake the whole thing up? Do you aerate the second beer before you rack it onto the yeast? Has anyone every had problems with reusing a yeast cake?

__________________
fatnoah is offline
 
Reply With Quote Quick reply to this message
Old 01-18-2013, 07:27 PM   #2
HollisBT
Feedback Score: 1 reviews
Recipes 
 
Join Date: Aug 2011
Location: Greenville, SC
Posts: 620
Liked 34 Times on 25 Posts
Likes Given: 13

Default

Rack on top and aerate as normal. Then, get ready for a short lag time and VERY active fermentation .

__________________
HollisBT is offline
justkev52 Likes This 
Reply With Quote Quick reply to this message
Old 01-18-2013, 07:29 PM   #3
justkev52
Feedback Score: 0 reviews
Recipes 
 
Join Date: Feb 2011
Location: West Valley City, Utah
Posts: 265
Liked 31 Times on 29 Posts
Likes Given: 587

Default

I transfer or keg the batch while the new brew is cooling off.
I usually swirl it up a bit but I don't know why.
Just dump it on top and shake the hell out of it.
Wait a couple of hours and she'll be rockin.
Keep a blowoff tube handy in case you overpitched.

__________________
justkev52 is offline
 
Reply With Quote Quick reply to this message
Old 01-18-2013, 07:35 PM   #4
hbhudy
Feedback Score: 0 reviews
Recipes 
 
Join Date: Oct 2009
Location: Atl.GA
Posts: 328
Liked 1 Times on 1 Posts

Default

How many times can you "reuse" a yeast cake? Would it be OK to split the yeast cake after the 2nd usage?

__________________
hbhudy is offline
 
Reply With Quote Quick reply to this message
Old 01-18-2013, 08:00 PM   #5
dcp27
Feedback Score: 0 reviews
Recipes 
 
Join Date: Jan 2010
Location: Medford, MA
Posts: 4,073
Liked 117 Times on 113 Posts
Likes Given: 3

Default

Quote:
Originally Posted by hbhudy View Post
How many times can you "reuse" a yeast cake? Would it be OK to split the yeast cake after the 2nd usage?
IIRC, its usually safe up to 10 generations, you may start to get mutations thereafter.

I wouldn't use a whole cake tho, its far more yeast than you need. around 1 cup of slurry is good for most ales - use mrmalty for exact figures
__________________
dcp27 is offline
 
Reply With Quote Quick reply to this message
Old 01-18-2013, 08:48 PM   #6
HollisBT
Feedback Score: 1 reviews
Recipes 
 
Join Date: Aug 2011
Location: Greenville, SC
Posts: 620
Liked 34 Times on 25 Posts
Likes Given: 13

Default

Quote:
Originally Posted by hbhudy
How many times can you "reuse" a yeast cake? Would it be OK to split the yeast cake after the 2nd usage?
As long as you keep your sanitation practices up to snuff, you can reuse it until it stops making good beer...

Although, at that point you are better off washing and harvesting yeast instead of just keeping a single cake alive.
__________________
HollisBT is offline
 
Reply With Quote Quick reply to this message
Reply


Quick Reply
Message:
Options
Thread Tools


Similar Threads
Thread Thread Starter Forum Replies Last Post
question on reusing a yeast cake doodoobutter Fermentation & Yeast 4 03-29-2012 06:35 PM
Question about reusing a yeast cake NordeastBrewer77 Fermentation & Yeast 5 05-24-2011 04:46 PM
Question on reusing yeast cake loobobone Beginners Beer Brewing Forum 6 02-18-2009 09:01 PM
Reusing Yeast cake question Uncle Argyle General Techniques 1 09-01-2007 05:46 PM
Reusing yeast cake question EdWort All Grain & Partial Mash Brewing 4 07-09-2007 12:21 AM