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Old 08-12-2010, 01:03 PM   #1
beerloin
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I am thinking about brewing this
http://www.homebrewtalk.com/f68/doub...l-stout-74932/

and using an existing yeast cake from another beer.

this recipe calls for S-05, but my cake is a S-04.

Is this a good idea?

What should I expect?

thanks for your help!!

 
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Old 08-12-2010, 03:50 PM   #2
Forbein11
 
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I'd expect a little less attenuation, a more malty beer and a few more esters. I think S-04 would be a great yeast for an imperial stout. Throwing on the cake, I would also expect a pretty wild fermentation and I'd use a blowoff tube. Good luck.
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Old 08-12-2010, 04:41 PM   #3
beerloin
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Quote:
Originally Posted by Forbein11 View Post
I'd expect a little less attenuation, a more malty beer and a few more esters. I think S-04 would be a great yeast for an imperial stout. Throwing on the cake, I would also expect a pretty wild fermentation and I'd use a blowoff tube. Good luck.
should i try to compensate the maltiness with more hops?

 
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Old 08-12-2010, 04:45 PM   #4
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Is there any particular reason you are choosing to pitch on the yeast cake of your previous batch? My advice would be to just go ahead and buy some S-05.

 
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Old 08-12-2010, 04:58 PM   #5
devilishprune
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Yeah dry yeast is cheap, just buy a pack. If you use S-04, it's less attenuative than S-05, which is not something you really want on a beer that is going to have a high FG anyway.

 
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Old 08-12-2010, 05:47 PM   #6
Forbein11
 
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I wouldn't adjust the hops much if at all. The profile will be a bit more malty but it won't make a malt bomb or anything. It will just not be a crisp. I don't think your final gravity will be all that far off using S-04 vs. US-05. Both list 75% or so for attenuation. I've gotten over 75% with both.
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Old 08-12-2010, 06:58 PM   #7
samc
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Don't know if 04 will handle that much alcohol. Why take a chance for a few bucks of yeast?

04 is an easy fast ferment but I have found I don't like the end product as much as 05 or a liquid English yeast.

 
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Old 08-13-2010, 12:34 PM   #8
beerloin
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Quote:
Originally Posted by samc View Post
Don't know if 04 will handle that much alcohol. Why take a chance for a few bucks of yeast?

04 is an easy fast ferment but I have found I don't like the end product as much as 05 or a liquid English yeast.
i wasn't worried about the cost... just trying to get something that will be able to survive...

do you suggest pitching 2 packets of S05?

 
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Old 08-13-2010, 12:55 PM   #9
babalu87
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Quote:
Originally Posted by devilishprune View Post
Yeah dry yeast is cheap, just buy a pack. If you use S-04, it's less attenuative than S-05, which is not something you really want on a beer that is going to have a high FG anyway.
Wort production has more to do with attenuation that the yeast strain does

WAY more.

FWIW a cake of yeast from a previous batch is better than throwing extra packs at a big beer

 
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Old 08-13-2010, 01:25 PM   #10
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Quote:
Originally Posted by babalu87 View Post
Wort production has more to do with attenuation that the yeast strain does

WAY more.

FWIW a cake of yeast from a previous batch is better than throwing extra packs at a big beer
+1. Use the cake and watch your mash temps carefully. I suggest either mashing at 148 or doing a step or double infusion at 145 and 155. I also would not suggest adding O2 or even too much aeration to the wort (cake + big beer + too much 02 = giant blowoff).
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