German Chocolate Cake
["1 pkg. (4 oz.) Baker's German's sweet chocolate", "1/2 c. water", "2 c. flour", "1 tsp. baking soda", "1/4 tsp. salt", "1 c. (2 sticks) butter", "2 c. sugar", "4 egg yolks", "1 tsp. vanilla", "1 c. buttermilk", "4 egg whites"]
["Heat oven to 350\u00b0.", "Microwave chocolate and water in bowl on High 1 1/2 to 2 minutes or until melted.", "Mix flour, baking soda and salt; set aside.", "Beat margarine and sugar in large bowl with electric mixer on medium speed until light and fluffy.", "Add egg yolks, 1 at a time, beating well after each addition.", "Stir in chocolate mixture and vanilla.", "Add flour mixture alternately with buttermilk, beating after each addition until smooth.", "Beat egg whites in another large bowl with electric mixer on high speed until stiff peaks form.", "Gently stir into batter. Pour into three (9-inch) round cake pans.", "Bake 30 minutes or until cake springs back when lightly touched in center.", "Immediately run spatula between cakes and sides of pans.", "Cool 15 minutes; remove from pans.", "Cool completely."]
["chocolate", "water", "flour", "baking soda", "salt", "butter", "sugar", "egg yolks", "vanilla", "buttermilk", "egg whites"]