ViperMan
Well-Known Member
step starter, AKA stepping up: making several starter, each bigger than the previous, to get to the desire yeast population. there is a limit to how much growth you can get out of a starter, so if you need a lot of yeast or you are starting with a small population, you need to build up in steps. an example is harvesting yeast from a bottle of commercial beer. you can't just pitch the dregs into a 2 liter starter and expect massive growth. instead you should start with 100 ml of starter, let that ferment, then make a 500 ml starter, let ferment, cold crash, decant spent wort, and finally make a 2 liter starter.
high krausen: krausen is the white foam that appears on the surface of beer during fermentation. so "high krausen" is when the foam is at its highest - AKA the peak of fermentation. you want the yeast to be active and in chomping mode before adding it to an environment that contains alcohol.
i take it that you didn't make a starter with the san diego? you just pitched it directly? should still work but won't be as effective.
I gotcha on both counts. I read that you CAN generally get a pretty decent doubling of your yeast with a 3L starter, but that from there you're better off "stepping". That being said (or read?) I DID make a 3L starter of the San Diego yeast. I can also say with confidence that there was at LEAST twice the "goop" at the bottom as there is in a vial of White Labs. Unfortunately I was not able to pitch at high priestess... I mean krausen (lol again) because I THOUGHT my original yeast was coming back to life. So I cold-crashed it for about 2 days until yesterday when I realized my satellite fermenter was lying to me...
Seriously - any idea why the small bottle (a repurposed 8oz apple juice bottle - SANITIZED before use...) would show yeast activity and the 3-gallon FV does not?? I mean I had new trub in the bottom and everything... The FV's OG did not BUDGE since I diluted... SO weird!!
...anyways, this morning in a perfect 70-degree environment both my mini-bottle (I pulled out a new sample after pitching) and fermenter are fermenting actively. I've read this San Diego acts quickly, so I'm hoping I can bottle by next weekend. I also suspect the San Diego will have no problem bottle-carbing. I just wonder how long it'll take to settle out for the beer to be drinkable...