3
votes
2answers
443 views

Harvesting commercial yeast

Which commercial beers (local and/or national) are bottle conditioned and still have viable yeast? Also, what do commercial brewers do that renders the yeast unusable (pasteurization, filtering, ...
12
votes
4answers
20k views

How to grow yeast?

I have read that it is possible to grow your own yeast, but I have not been able to find exact instructions. I would like to grow my own yeast so that I don't have to spend money on those small ...