Chocolate Cake
["2 c. sifted cake flour", "2 tsp. baking powder", "1/4 tsp. soda", "1/2 tsp. salt", "2/3 c. butter", "1 2/3 c. sugar", "3 eggs, well beaten", "3 sq. unsweetened chocolate, melted", "1 c. milk", "1 tsp. vanilla"]
["Sift flour once; measure.", "Add baking powder, soda and salt. Cream butter.", "Add sugar gradually and cream well, then add chocolate and blend.", "Add dry ingredients, alternating with milk; beat after each addition until smooth.", "Add vanilla.", "Bake in two 9-inch layer pans at 350\u00b0 for 30 minutes."]
["cake flour", "baking powder", "soda", "salt", "butter", "sugar", "eggs", "unsweetened chocolate", "milk", "vanilla"]