Problem with repitching Slurry

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Soay4699
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Problem with repitching Slurry

Post by Soay4699 » Thu Jan 12, 2017 3:28 pm

Well I have just had my first attempt at re-pitching slurry from my last brew yesterday. How long should it take to show clear signs of fermenting?

I did a brew and bottle on the same day so the yeast slurry was just harvested from the fermenter into a serialized container and stored briefly on the window sill at 20c. MrMalty calculator default settings suggested 117ml so I pitched about 120 to 130ml.

Rob.

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Rubbery
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Re: Problem with repitching Slurry

Post by Rubbery » Thu Jan 12, 2017 4:24 pm

I guess you have fermented right out, if you bottled the last batch, so the yeast will take a little while to wake up. You should see signs of fermentation at 24 hours (+/- 12 hours).

Soay4699
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Re: Problem with repitching Slurry

Post by Soay4699 » Thu Jan 12, 2017 5:05 pm

Rubbery wrote:I guess you have fermented right out, if you bottled the last batch, so the yeast will take a little while to wake up. You should see signs of fermentation at 24 hours (+/- 12 hours).
So it could take up to 36 hours to show any real signs of life, amazing! Thanks.

I forgot to mention that the yeast was S04 and the batch it was gathered from had fermented down to 1019 giving around 67% attenuation by my calculation. It is also in a temperature controlled fridge at 20c.

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alexlark
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Re: Problem with repitching Slurry

Post by alexlark » Thu Jan 12, 2017 6:07 pm

Mine took approx 42 hours to get going when I re-pitched slurry 2 weeks ago. I was nervous by then! Lol

Edit: Mine was half of a W34-70 cake.
Last edited by alexlark on Thu Jan 12, 2017 8:12 pm, edited 1 time in total.

Wezzel

Problem with repitching Slurry

Post by Wezzel » Thu Jan 12, 2017 6:46 pm

I didn't measure mine but must have dumped in considerably more than 120ml as I had a full Krausen in about 12 hours.

I probably massively over pitched but some people siphon straight onto the old yeast cake and use the whole lot. The beer tastes great though.


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Soay4699
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Re: Problem with repitching Slurry

Post by Soay4699 » Sat Jan 14, 2017 4:45 pm

Panic over. A fair fermentation is taking place after 36 hours. TG.

Rob.

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john luc
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Re: Problem with repitching Slurry

Post by john luc » Sat Jan 14, 2017 5:20 pm

Report back on how it performs the second time around. I am often finding both wet and dry yeast giving better performance on second and third pitches.
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McMullan

Re: Problem with repitching Slurry

Post by McMullan » Sun Jan 15, 2017 12:25 am

john luc wrote:Report back on how it performs the second time around. I am often finding both wet and dry yeast giving better performance on second and third pitches.
That's a common observation. I think it's related to under pitching healthy yeast initially.

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