Originally Posted by Kaiser
dstar, how much variability in yeast growth compared to Jamil's calculator have you seen?
Usually get ~75% of what Jamil's calculator predicts. One time I got 51%. I've been plugging in 25% additional cells needed lately and get what I need out of the calculator. I use foil over a flask on a stirplate. I'm going to re-design the stir plate so I can get more agitation without throwing the bar. I tried pumping sterile air into the headspace continuously but that didn't help. I may try what you did with the stone in the starter wort but that is more stuff to clean.
Fermenting: Azacca Oat Pilsner, Egregious-ish, Barrel Fermented Dreg DelcoLambic, Sacch Trois Helles
Drinking: RIS v7, Doppelbock, RIS v6, Carrot Blossom Cedar Mead, Sauerkraut Fermented Gose, Gueuze, Brett Blonde, Kriek, Saison, Sour Blonde
Barrel aged: Rye Barleywine, Tripel, Wee-Heavy