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 Post subject: Repitching after gelatin
PostPosted: Tue Dec 27, 2011 7:30 am 
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Joined: Mon Aug 09, 2010 6:58 pm
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Location: Tyler, MN
Not thinking clearly, I threw some gelatin in a carboy before remembering that I wanted to reuse the yeast that is in there. Can I still reuse this yeast, or will the gelatin keep it from normal fermentation?


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 Post subject: Re: Repitching after gelatin
PostPosted: Tue Dec 27, 2011 7:46 am 
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I would think you are SOL unfortunately. That gelatin will all settle to the bottom of your fermenter and leave quite a mess along with all of your yeast. I think it would be difficult to separate out the healthy yeast from the gelatin.


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 Post subject: Re: Repitching after gelatin
PostPosted: Tue Dec 27, 2011 11:08 am 
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I think it will probably be just fine. You won't know unless you try.

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"This is grain, which any fool can eat, but for which the Lord intended a more divine means of consumption. Let us give praise to our Maker, and glory to His bounty, by learning about... BEER!" - Friar Tuck (Robin Hood - Prince of Thieves)


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 Post subject: Re: Repitching after gelatin
PostPosted: Tue Dec 27, 2011 12:23 pm 
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Joined: Mon Aug 09, 2010 6:58 pm
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Location: Tyler, MN
Ah, dissenting opinions, gotta love it! I do have a pack of dry yeast laying around that is roughly the same type. I could try reusing my gelatin yeast and if it didn't take off in a couple days, pitch the (properly rehydrated) dry yeast. That should work, right?

I do appreciate any/all opinions!


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 Post subject: Re: Repitching after gelatin
PostPosted: Tue Dec 27, 2011 12:52 pm 
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Location: Chicagoland, IL
You can always try rinsing the yeast to drop out the solids and see what's left. Also, another option might be to run the yeast through a starter and see what the fermentation/flocculation looks like and how much creamy, white yeast you get at the end.

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 Post subject: Re: Repitching after gelatin
PostPosted: Tue Dec 27, 2011 1:48 pm 
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I won't pretend to have any scientific evidence, but I've done this twice and it worked just fine. I did rinse the captured yeast with sterile water prior to repitching. Stopped doing it as I started just adding the gelatin in the keg.

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 Post subject: Re: Repitching after gelatin
PostPosted: Wed Mar 14, 2012 9:00 am 
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Joined: Mon Aug 09, 2010 6:58 pm
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Location: Tyler, MN
Just an update in case anyone else suffers from the same lack of foresight. I ended up re-pitching the yeast. I assumed it wouldn't be too healthy, so I pitched quite a bit more than what Mr. Malty recommended. It started more slowly than usual, but after a couple days it was happily fermenting, and it finished right about where I expected.


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 Post subject: Re: Repitching after gelatin
PostPosted: Wed Mar 14, 2012 5:50 pm 
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Yeah, I figured that they would still work. The gelatin just assists in flocculation (clumping), but doesn't kill or deactivate the yeast.

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