Commercial Description Brewed continuously  since 1989, Bison’s Chocolate Stout is the Original Chocolate Stout. Our Chocolate Stout is characterized by a boost of Peruvian cocoa added in the mash. Like Barry White’s voice in a bottle, Bison’s Chocolate Stout is a dark, slow-pouring aphrodisiac of the smoothest proportions. Rich and roasty with charismatic flavors of dark chocolate and espresso, and creamy, dry finish.