Early in the 2004 Battlestar Galactica, Chief Tyrol discovers some of the crew using a homemade still from spare parts to make their own alcohol. He ends up showing them how to fix/improve it.
After that, through the show, we see at least two fully operational bars on the Galactica itself, and asides from rare occasion, there never seems to be a lack of available alcohol (the exceptions being when Tigh has already finished/disposed of his stash).
By the end of the show, the fleet is low on supplies like toothpaste, but the alcohol never seems to stop flowing.