Mocha is a port in Yemen from which very fine Arabian coffee has been shipped since the 16th century. The word has come to designate a coffee and chocolate flavor combination very popular for beverages, desserts and candies.
This recipe may be assembled into a round layer cake; bake the cake in two 9-inch pans. Bake as directed on the package.
To keep the serving plate clean while frosting the cake, arrange pieces of waxed paper under the bottom edge of the cake. When you are done frosting it, gently remove the waxed paper.
Prepare the recipe in advance; cover and refrigerate it for up to eight hours.
Garnish the dessert with orange zest dipped in sugar.