"Spirit of Boston" Thirteenth Hour Stout begins as a Belgian-style imperial stout, made from two-row pale malt blend and malt varieties like Caramel 60, Munich, Special B, and Carafa III, with Hallertauer Mittelfrüh hops and Kosmic Mother Funk also on the ingredient list. Distilled in a copper pot still then aged in casks of American oak, it's bottled at 42% ABV.