Bourbon barrel aged Doppelbock-style lager. A modern riff on classic style, Convex Refraction adds bourbon barrel aging and carefully crafted malt to the long-standing spirit of Doppelbock. Brewed with caramelized Triticale malt from Haus Malts, this hefty lager aged in bourbon barrels for 14 months after extended lagering. In collaboration with Burial.