Didn't ever try it with beer but I do recall following the old traditional "country wine" recipes where you basically stew the fruit with water and sugar and then chuck in a slice of bread spread with yeast. Just ferment off in a tub covered with a dishcloth....I really want to find the time to try making a beer with baker's yeast (the proper stuff that comes in blocks like putty) just to see what happens. I'm sure yeast was just "yeast for whatever purpose" not so many years ago.
Has anybody tried this, by the way?
This would have been ... ohh, maybe 45 years ago - might not have tasted very sophisticated but nobody died.