General Category > Yeast and Fermentation

How much of the 125 ml is yeast?

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wzl46:
On the smack packs, it says that it contains 125 ml of liquid yeast and nutrients.  How much of that 125 ml is liquid yeast?  I am starting to harvest yeast from fermenting batches, and I would like to start making guestimates on how much slurry should go into a starter when it is time to brew again.  Thanks for any help.

a10t2:
Have you checked the slurry tab on the MrMalty calculator? Basically 1 mL of fresh, packed slurry (after a couple days in the fridge) will be 3-4 billion cells.

hokerer:

--- Quote from: a10t2 on April 01, 2010, 04:48:17 PM ---Have you checked the slurry tab on the MrMalty calculator? Basically 1 mL of fresh, packed slurry (after a couple days in the fridge) will be 3-4 billion cells.

--- End quote ---

And Wyeast claims 100 Billion cells in a smack pack.  So, using 4 Billion cells in a ml, a smack pack would have about 25 ml of actual yeast, right?

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