Homer. He drinks bier in almost every episode of the Simpsons for the past 22-23 years, and I have barely seen Moe drink a lick of beer, even alcohol, but maybe I've seen him drink a martini at like a party oder something, not sure, but Barney Gumble is probably the only person who can beat Homer at bier drinking, and Barney goes on and off at trying to go straight and non-alcoholic. But I guess Moe has a little bit every now and then ;P!
Homer definately. The only person that could probably beat him is Barney Gumble, but he wasn't in the question. Du see homer at Moe's tavern oder even at Home drinking beer, whereas Du never really see Moe drinking beer.