How many generations?
- Thread starter robsan77
- Start date
Help Support The Homebrew Forum:
unclepumble
Landlord.
In theory, if you are brewing regularly,(low gravity beers) or have really good yeast management, you can use the same yeast for ever.
I have used up to about 5 generations so far, then chucked it, (because i wasn't going to brew for a while.
I visited a commercial earlier this year that were on pitch 854.
It depends on a few things on how long you can use for.
1 Cleanliness
2 strength of wort
3 vessel your fermenting in
4 temp
5 nutrient levels#
6 when you skim/collect
7 what you do with it once you have skimmed
to name a few
Then there is always the mutation scenario, which sometimes can be benificial.
I wouldn't keep a dried yeast going for many generations, as those are the ones most likely to alter their charcteristics (mutate)
UP
I have used up to about 5 generations so far, then chucked it, (because i wasn't going to brew for a while.
I visited a commercial earlier this year that were on pitch 854.
It depends on a few things on how long you can use for.
1 Cleanliness
2 strength of wort
3 vessel your fermenting in
4 temp
5 nutrient levels#
6 when you skim/collect
7 what you do with it once you have skimmed
to name a few
Then there is always the mutation scenario, which sometimes can be benificial.
I wouldn't keep a dried yeast going for many generations, as those are the ones most likely to alter their charcteristics (mutate)
UP
robsan77
Landlord.
- Joined
- Jan 7, 2010
- Messages
- 1,748
- Reaction score
- 2
I've been reusing a portion of the slurry mainly. Trying my best to collect the best bit.
did a nice technique yesterday though....
Brewed a beer thursday night and pitched about 100ml of 3rd generation wlp051 that was looking a bit dirty to be honest. The next day when bubbles started coming out the airlock at about 1 per minute (before a head formed, just a few bubbles), I dropped the lot into a fresh FV, leaving behind the dead yeast and **** that was in with the yeast slurry.
I wouldnt normally do this as I usually get a great start on fermentation after a few hours but on this occasion the drop happened after about 18 hours.
did a nice technique yesterday though....
Brewed a beer thursday night and pitched about 100ml of 3rd generation wlp051 that was looking a bit dirty to be honest. The next day when bubbles started coming out the airlock at about 1 per minute (before a head formed, just a few bubbles), I dropped the lot into a fresh FV, leaving behind the dead yeast and **** that was in with the yeast slurry.
I wouldnt normally do this as I usually get a great start on fermentation after a few hours but on this occasion the drop happened after about 18 hours.
unclepumble
Landlord.
Similar threads
