'Real ale' has live yeast, since it hasn't been pasteurized. It doesn't last on the shelf as long, but it's alive. You can also pirate it if you like the taste.
Damn these new drinks with their DRM, that you need to buy each time you want to consume them...
You can harvest the yeast from live beer and grow the yeast for use in your own beers.
We should start the free beer foundation!
The Free Beer Foundation is about 'Free as in freedom', not free as in 'free b...' wait...damnit.