Ingredients 5 eggs, separated into yolks and whites 1 cup sugar, divided into two 1/2 cup amounts 1/2 cup cake flour 1/4 cup cocoa powder 1/4 teaspoon salt 1/2 teaspoon cream of tartar Filling 4 egg whites 2 cups icing sugar 1/4 cup baking cocoa (powdered cocoa) 1/4 teaspoon vanilla extract Icing 1 1/2 cups icing sugar 2 egg whites…