So I have some saved yeast slurry (WY3724 Belgian Saison) that I plan to reuse. Brew day will be seven weeks after the harvest date. According to mrmalty.com the viability is 19% and therefore I’ll need 677ml or 22.9 floz of slurry per five gallons. This is 280 billion cells. My OG will be 1.082.
So lets say instead of pitching this straight in, I make a 3 quart starter one week in advance. Should I still use 22.9 floz of slurry in the starter, or can I use less because of the growth that I’d be able to expect? Again, using mrmalty.com it looks like I can get to 280 billion cells by simply pitching 88 billion (one pack at 88% viability) into a 3 quart starter. That would be only 7.1 floz of slurry in the starter.
So is this what I should do? Pitch 7.1 floz of slurry into a 3 quart starter, and then from there into my 1.082 wort? Have I made any mistakes?