for filling 2.5 to 3 dozen small cup cakes. HUNGARIAN CHOCOLATE FROSTING: Melt chocolate in double boiler. Remove from boiling water, add sugar and water, and blend. Add egg yolks, one at a time, beating will after each. Add butter, a tablespoon at a time, beating thoroughly after each amount. Makes enough frosting to cover the top of one 23 cm layer and sides of three 23 cm layers, or to cover the tops and sides of two 23 cm layers. Eat lots of this and you too can look like Kate Smith! Probably won't be able to sing as well though...