Chocolate and Peppermint Roulade Ingredients Roulade 1/4 cup all-purpose flour 6oz dark or bittersweet chocolate, chopped fine 2 Tablespoons cold unsalted butter 1/4 cup Dutch-process cocoa powder, sifted (plus more for your work surface) 1/8 teaspoon table salt 6 large eggs, at room temperature 1/3 cup granulated sugar 1 teaspoon vanilla extract 1/8 teaspoon