MyAJC Mike Castagno is new head brewer at Twain's Brewpub in Decatur MyAJC Twain's Brewpub in Decatur has enjoyed a pretty good run of head brewers in recent times. Before he left to found Creature Comforts in Athens, David Stein developed the recipe for the much beloved, and often elusive, Tropicalia IPA at Twain's, while ...