RPh_Guy
Bringing Sour Back
I am not 100% confident that pulling a small sample will be able to capture the full mix of microbes, but your best bet is to swirl the fermenter a bit (if no pellicle has formed yet) and pull out a few ounces.What would be the best way to use some of the yeast from my "failed" batch, while still keeping that batch ?
Purge with CO2 and/or top up with wort or beer.
Feed the sample some wort too, leave it to ferment for a couple days (covered like a starter), and then put in the fridge.
Whenever I get a new mixed culture it goes into my yeast ranch so I never need to pull from a previous batch like this.
Good luck. Cheers