Summary: We talk with brewmasters at Goose Island Clybourn and Revolution Brewpub on the coldest day in the past 20 years in Chicago. We also discuss the Lagunitas/Sam Adams controversy, Big Sky Brewing's suit against Budweiser, the end of 4 Paws Brewing and Chicago's forthcoming first cider bar. We drink a bottle of Goose Island Clybourn's Brettanomite.