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Yeast clustering in starter

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jas0420

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Ever had yeast cluster together in a stir plate starter??? I have 4 flasks going with WLP005 British Ale, all on stir plates, all started and stepped up with clear wort. All 4 flasks look like the pic attached. It is like a tornado of yeast.

I thought the visible material might have been solids from the wort, but under a microscope they are definitely, 100% certain, little clusters of yeast. I need 971B cells for this brew and visibly it looks like about 10X that. If I turn off the stir plates they all settle out very fast. If I take a sample and try to count them, there's almost nothing showing up on the hemocytometer, so I'm not getting a good representation of the actual cell count in my mind.

I haven't had starters do this before........ These are growing in a room that is ~ 71 degrees F and have been on stir plates from the start. I usually make a little extra starter than BeerSmith calls for, do a count, and downwardly adjust the volume I actually use based on said counts. I made about 12L, need about 10.3L in a perfect BeerSmith world.... Just looks like a LOT of yeast and I'm not sure at this point how to get an accurate count since my samples (seemingly) aren't very homogenous (even though I took samples from a flask while it was still stirring).

Currently planning to crash cool, and use about 5/6'th of the resulting slurry....
 

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yeastseeker

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english ale yeast flocculates to an absurd degree. The starters look like chunks of yogurt spinning around in wort. This is totally normal. It can make cell counting difficult. Personally I wouldnt get too hung up on numbers. You will be fine
 
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jas0420

jas0420

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Thank you for the peace of mind!!

english ale yeast flocculates to an absurd degree. The starters look like chunks of yogurt spinning around in wort. This is totally normal. It can make cell counting difficult. Personally I wouldnt get too hung up on numbers. You will be fine
 
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