Author Topic: repitching aged slurry  (Read 1004 times)

Offline brewinhard

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repitching aged slurry
« on: March 11, 2016, 11:25:44 PM »
I have some saved slurry I want to repitch that will be approximately 3 wks old by time I want to repitch it. I typically repitch within 2 days (at very most) for maximum freshness. I want to reuse the yeast from this next beer I plan on repitch the aged slurry into and don't want a ton of dead cells in with the mix.

Am I okay to pitch this 3 wk old slurry with no worries providing I have enough cells for my OG, or am I better off adding just a small amount of this slurry to some fresh starter wort and pitching that instead?  If I go the second route, any idea how much to add to X starter size to get enough yeast for next brewday? 

Offline Stevie

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Re: repitching aged slurry
« Reply #1 on: March 11, 2016, 11:26:55 PM »
You can use a yeast calculator to approximate the viability of the slurry. Try Mr Malty

Offline euge

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Re: repitching aged slurry
« Reply #2 on: March 11, 2016, 11:29:11 PM »
I don't like pitching slurry. ??? For the very reason you mentioned.

My vote is make a starter.

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Offline Wort-H.O.G.

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Re: repitching aged slurry
« Reply #3 on: March 11, 2016, 11:33:59 PM »
done 4 week old with no issues.
Ken- Chagrin Falls, OH
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Offline heavydeadlifts

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Re: repitching aged slurry
« Reply #4 on: March 11, 2016, 11:41:27 PM »
I just made a starter for 300ml worth of a 6 month old slury 3 days ago and now it is rocking away in a 1 gallon fermenter with a huge healthy thick krausen
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Offline heavydeadlifts

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Re: repitching aged slurry
« Reply #5 on: March 11, 2016, 11:42:33 PM »
And I have done this many many many times to use for fermentation with good results
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Offline brewinhard

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Re: repitching aged slurry
« Reply #6 on: March 11, 2016, 11:45:50 PM »
done 4 week old with no issues.

straight slurry repitch, no starter?

Offline Wort-H.O.G.

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Re: repitching aged slurry
« Reply #7 on: March 11, 2016, 11:46:42 PM »

done 4 week old with no issues.

straight slurry repitch, no starter?

Yes...many times. Just pitching larger quantity is all. Lags a little longer but no issues.


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Ken- Chagrin Falls, OH
CPT, U.S.Army
https://www.facebook.com/pages/Harveys-Brewhaus/405092862905115

http://braukaiser.com/wiki/index.php?title=The_Science_of_Mashing

Serving:        In Process:
Vienna IPA          O'Fest
Dort
Mead                 
Cider                         
Ger'merican Blonde
Amber Ale
Next:
Ger Pils
O'Fest

Offline gman23

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Re: repitching aged slurry
« Reply #8 on: March 12, 2016, 12:00:46 AM »
What yeast? I have had issues with dry yeast slurry apparently because it is deprived of O2...at least that's what I am told.
On Tap/Bottled: Hopfenbier, Kurbis Marzen, Red Rye, Vienna Lager,      

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Offline Wort-H.O.G.

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Re: repitching aged slurry
« Reply #9 on: March 12, 2016, 12:16:32 AM »
830,833,090,001 to name a few.


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Ken- Chagrin Falls, OH
CPT, U.S.Army
https://www.facebook.com/pages/Harveys-Brewhaus/405092862905115

http://braukaiser.com/wiki/index.php?title=The_Science_of_Mashing

Serving:        In Process:
Vienna IPA          O'Fest
Dort
Mead                 
Cider                         
Ger'merican Blonde
Amber Ale
Next:
Ger Pils
O'Fest

Offline gman23

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Re: repitching aged slurry
« Reply #10 on: March 12, 2016, 12:19:20 AM »
830,833,090,001 to name a few.


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Sorry ken. I was curious what yeast is in question in the op.
On Tap/Bottled: Hopfenbier, Kurbis Marzen, Red Rye, Vienna Lager,      

Fermenting: Imperial Porter
Up Next: Maibock, Braunbier

Offline brewinhard

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Re: repitching aged slurry
« Reply #11 on: March 12, 2016, 12:34:34 PM »
Thames River Valley II WY PC strain released this winter.