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4

Smack packs contain yeast nutrients, and sugars nothing magical. Its just a mini starter in a bag for proofing yeast for direct pitching. Don't need it at all If doing your own starter. If you do all grain your wort has all the nutrients it needs. Sounds like your 1st stage went fine. I would just step up as normal. At the risk of infection just throw the ...


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That is a small batch 2.43 gallons. I too show a yeast viability at 56% Your starter volume of 300ml seems low. That is more of a proofing volume. My calculator shows 107bil cell growth if you use 1000ml starter (4oz DME) 1.040sg wort using NO stirplate. Stirplate will bump it up to 167bil cells. I wouldn't use a Stirplate in this case. Do a 1000ml ...


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Yes, it roughly lines up using my preferred calculator if I use the stir-plate aeration options (the "C.White" option has 124 bn cells, "Kai" has 95 bn cells). I'll note that the Brewer's Friend calculator does show 56% viability, or about 59 bn cells, not 36 bn. What sort of aeration method are you using for the starter? That has a huge impact on the ...



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