Fat Bastard
Brew Cvlt Doom
- Joined
- 11/8/11
- Messages
- 914
- Reaction score
- 226
So, a while back I was given a vial of Czech Lager Yeast that was out of date. Yeastcalc reckons it's got zero percent viable cells.
Now back in the day when I used to not care about such things and everything got a 2l starter, I managed to culture up similarly out of date yeasts and make them produce beer of a drinkable (and sometimes club comp level prize winning) beers. If I worried about it, i gave it a few days extra on the stirplate.
I'd like to be a bit more scientific about it this time.
Is it just a matter of mucking around with the date/initial cell count until it calculates something that you can step up until you get the required 480-500 billion cells? or is it more involved than that?
Cheers,
FB
Now back in the day when I used to not care about such things and everything got a 2l starter, I managed to culture up similarly out of date yeasts and make them produce beer of a drinkable (and sometimes club comp level prize winning) beers. If I worried about it, i gave it a few days extra on the stirplate.
I'd like to be a bit more scientific about it this time.
Is it just a matter of mucking around with the date/initial cell count until it calculates something that you can step up until you get the required 480-500 billion cells? or is it more involved than that?
Cheers,
FB