Double Chocolate Layer Cake with Raspberry Filling Ingredients For cake layers: 3 ounces fine-quality semisweet chocolate such as Callebaut 1 1/2 cups hot brewed coffee 3 cups sugar 2 1/2 cups all-purpose flour 1 1/2 cups unsweetened cocoa powder (not Dutch process) 2 teaspoons baking soda 3/4 teaspoon baking powder 1 1/4 teaspoons salt 3