Yeast Pitch Rate and Starter Calculator

Discussion in 'Calculator Support Forum' started by dnierer, Mar 20, 2020.

  1. dnierer

    dnierer New Member

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    I'm using the yeast pitch rate and starter calculator to determine how much yeast I'll need for my next brew day and something seems amiss. I'm making a stout with a high OG of 1.088, but just a 6 gallon batch, according to the calculator I'll need 7 packs of US-05 dry yeast or 80 grams. That just seems extraordinarily high. I looked up Safale US-05 and the manufacturer confirmed cell density at 6 billion cells / gram. What am I missing here?

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  2. Pricelessbrewing

    Pricelessbrewing QA Software Tester
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    The issue is that the 6B/gram is the minimum viable cell density, which is going to be at the end of it's shelf life. On average most satchets of dry yeast contain about 200B cells, a satchet is 11.5g. That's 17.4 B / gram. You'll want~2-3 satchets
     
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