Contributed by World Recipes Y-Group IngredientsEdit 1 egg white 1 cup sugar ¼ cup brown sugar ¼ teaspoon cream of tartar ⅓ cup water salt -- pinch 1 teaspoon vanilla DirectionsEdit Combine ingredients in double boiler on low heat. Beat with electric mixer for 4 minutes. Spread on cool cake. Enjoy. Retrieved from "https://recipes.fandom.com/wiki/Black_Chocolate_Cake_Frosting?oldid=755521" Categories: Brown sugar Recipes Egg white Recipes Frosting and icing Recipes World Recipes Community content is available under CC-BY-SA unless otherwise noted.