The Last Supper

Jesus had one cup of wine at the party, The Holy Grail from which he gave wine to all the guests - the 12 apostles.

We know how good JC was at replicating party fare - the feeding of the 5,000 tells us this. So it would have been easy for Him to get a dozen or so blokes drunk on one glass of wine.

(The loaf of bread probably went a lot further than we're led to believe as well.)