Yanni Kehagiaras of San Francisco's Nopa restaurant created this dessert drink for a beer-cocktail competition. He says, The rum is in there to give this beer cocktail a bit of a punch. I wanted to use a dark rum, but nothing too spicy or funky that would take the focus away from the beer. So I chose Diplomatico, which adds a subtle sweetness and caramel flavor without clashing. That approach—and this drink—is likely to wins fans on both sides of the beer/cocktail divide.