Re-using Yeast from high gravity beer - Home Brew Forums
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Old 02-24-2009, 07:06 AM   #1
jiffybrew
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Oct 2007
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I read some where that you shouldn't re-use beer from high gravity beers. I'm making a dark belgian and want to re-use the yeast. Can anyone comment?



 
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Old 02-24-2009, 07:54 AM   #2
Piotr
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Jun 2008
Poland, EU
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It is a good practice not to harvest yeast from beer above 5% ABV.

I belgian breweries they skim the yeast from the surface in the middle of the fermentation, before there is too much alkohol, but I've never tried it...



 
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Old 02-25-2009, 06:19 AM   #3
Got Trub?
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Apr 2007
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You could take a small amount from the yeast cake and then grow that up in a 1.040 yeast starter wort. I would not pitch onto the cake or use some portion of the cake to brew another beer. Anything that started much above 1.040 will have stressed the yeast out and they are not healthy and will not do a good job of fermenting your next beer. Another thing to avoid is pitching onto a cake from really hoppy beers as the high amount of hops also stress the yeast out.

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Old 02-25-2009, 06:24 AM   #4
sirsloop
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Jun 2006
South River, NJ
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Grab some krausen and make a new starter...
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Old 02-25-2009, 06:29 AM   #5
Donthoseme
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Jan 2007
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I've heard anything above 1.060 stresses the yeast. now this being said if you do a starter than you will be ensured of the yeasts viability and if your pitching rate is high enough you should be able to ward off any off flavors.

I know the pratice is light to dark low alcohol to high. That being said. I pitched the yeast from my Quad (12%) into my Belgian IPA (8%) and a belgian porter (5%) with great results. While i will definitley try to follow the lighter to darker low to high alc. if i'm in a pinch i'll pitch what i have. And i've had great luck. I'de say go for it. Do a starter first.
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Old 02-26-2009, 08:30 AM   #6
jiffybrew
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Oct 2007
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Thanks for all the answers! Would you also suggest a larger starter then?

 
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Old 02-26-2009, 12:09 PM   #7
coyote
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Feb 2007
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I'm new at this, so take this fwiw...

I pitched two additional Belgian Darks on the cake from one.

These beers have their faults (related to this? don't know), but under- attenuation isn't one of them.

ymmv

 
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Old 02-26-2009, 03:13 PM   #8
johnnyc
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Jan 2009
North Atlanta, GA
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As an alternative to pitching on the yeast cake, how about washing the yeast and keeping it for later? It sounds like using the harvested yeast with a starter later would be ok b/c of the yeast multiplying in the starter...Thoughts?
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Old 02-26-2009, 05:26 PM   #9
Donthoseme
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starter starter starter. Especially for harvesting yeast and storring it for a while. As long as your starter takes off the yeast is good. (keeping in mind your sterile... no not sterile i meant sanitary. Yea that's it.)


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UNDEAD Dunkelweise
Baby Bryce Barleywine
1st Anniversary Ale (Imperial Porter)
Night of The Living Dead Ale (belgian porter) (DECEASED)
Dawn of The Dead Ale (Belgial IPA)(DECEASED)
The Omega Ale (Quad)(DECEASED)

 
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