German Chocolate Cake
["2 c. sugar", "1/2 lb. whipped margarine", "3 egg yolks, unbeaten", "2 1/2 c. cake flour", "1 c. buttermilk", "1 tsp. soda (mixed with buttermilk)", "1 tsp. vanilla", "1 pkg. German sweet chocolate", "1/2 c. boiling water", "3 egg whites, beaten stiffly", "1/2 tsp. salt"]
["Melt chocolate in boiling water.", "Cool.", "Cream margarine and sugar until light and fluffy.", "Add egg yolks one at a time.", "Beat after each addition.", "Add chocolate, vanilla, buttermilk and flour to the egg mixture, beating slowly until smooth.", "Add the soda mixture and fold in the egg whites.", "Bake in layers or in a long, flat pan.", "Bake at 350\u00b0 for 35 to 40 minutes."]
["sugar", "whipped margarine", "egg yolks", "cake flour", "buttermilk", "soda", "vanilla", "sweet chocolate", "boiling water", "egg whites", "salt"]