The Barley Mow
Drink Boys Drink
Pretty well anything from "the Tale of Ale".

But outstandingly, a couple of Tenterden fests ago there was an american - I think he was an academic, but I don't know his name - who brought the house down in the closing singaround with a song that went step by step through the brewing process describing each physical operation and chemical chemical change with precision.

The style was rather like some Tom Lehrer songs.

It would be most fitting - so I hope these vague details help yo find the song or singer.