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General Homebrew Discussion / Re: Saving yeast from bottle-conditioned brew
« on: January 17, 2012, 02:41:49 PM »
Yes. You can do this, though it will likely be more difficult with an older stronger beer like a 1986 Thomas Hardy.
Leave the sediment in the bottle. Dose the bottle with a small amount (maybe 4 oz.) of weak wort to start waking up the yeast. Shake it to aerate it and cover it loosely with tin foil.
Give it 24 hours and add another small amount of wort. Shake, cover and wait. Next step would be to decant it into a larger vessel with more wort. Ideally this would be on a stir plate, but that's not required.
Continue stepping it up until you have a usable amount. Pour some off and taste it at some point in the process to make sure it's good yeast (ie. not sour or otherwise infected).
I've had luck with this process with commercial beers. It is not fool proof, but it will work more often than not.
Leave the sediment in the bottle. Dose the bottle with a small amount (maybe 4 oz.) of weak wort to start waking up the yeast. Shake it to aerate it and cover it loosely with tin foil.
Give it 24 hours and add another small amount of wort. Shake, cover and wait. Next step would be to decant it into a larger vessel with more wort. Ideally this would be on a stir plate, but that's not required.
Continue stepping it up until you have a usable amount. Pour some off and taste it at some point in the process to make sure it's good yeast (ie. not sour or otherwise infected).
I've had luck with this process with commercial beers. It is not fool proof, but it will work more often than not.

