Cell Count

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zrule

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Can anyone tell me the approximate cell count in this washed 2nd generation yeast? It is Wyeast Amercan Ale. Bottle is 2" in diameter and the yeast is 7/8" deep?

Yeast.jpg
 
You have about 2.75 cubic inches, or 45 ml of yeast slurry there. In Yeast: The Practical Guide to Beer Fermentation Chris White says that a yeast slurry will usually have a density between .8 billion and 2 billion cells per ml. You washed your yeast and it looks pretty clean so I'd estimate 1.5 billion cells/ml. (Its good to be a little conservative) That gives you about 67 billion cells.
 
Thanks jhamilt for your quick reply. Wow I guess I don't need a starter for my next batch of 5% summer wheat. I have heard that you can use too much yeast. Is that true and how does it effect the beer?
 
Oops....I was thinking a smackpack contained 1 billion cells....but it is 100 billion. Thanks for the help.
 
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