German Chocolate Cake
["1 (4 oz.) pkg. German chocolate", "1/2 c. boiling water", "1 c. butter", "1 tsp. vanilla", "1/2 tsp. salt", "4 egg whites, stiffly beaten", "2 c. sugar", "4 egg yolks", "2 1/4 c. flour", "1 tsp. baking powder", "1 c. buttermilk"]
["Melt chocolate in boiling water; cool.\tCream butter and sugar until fluffy. Add yolks, one at a time, beating well after each.", "Blend in vanilla and chocolate.", "Mix flour with soda and salt; add alternately with milk to chocolate mixture, beating after each addition until smooth.", "Fold in whites.\tPour into 3 (9-inch) cake pans.", "Bake at 350\u00b0 for 30 to 35 minutes."]
["chocolate", "boiling water", "butter", "vanilla", "salt", "egg whites", "sugar", "egg yolks", "flour", "baking powder", "buttermilk"]