German Chocolate Cake
["2 c. sugar", "1 c. shortening", "4 egg yolks", "1/4 lb. German sweet chocolate", "1/2 c. boiling water", "2 1/2 c. all-purpose flour", "3/4 c. buttermilk", "1 tsp. soda, dissolved in an additional 1/4 c. buttermilk", "1 tsp. vanilla", "pinch of salt", "4 stiffly beaten egg whites"]
["Cream together sugar and shortening.", "Add egg yolks one at a time.", "Melt chocolate in boiling water and add to mixture.", "Add flour alternately with buttermilk (including soda and buttermilk). Add vanilla and salt.", "Fold in stiffly beaten egg whites.", "Pour into 3 (9-inch) greased and floured cake pans.", "Bake 30 minutes at 350\u00b0.", "Fill and ice with German Chocolate Icing."]
["sugar", "shortening", "egg yolks", "sweet chocolate", "boiling water", "flour", "buttermilk", "soda", "vanilla", "salt", "egg whites"]