Champion Sponge Cake
["1 1/4 c. sifted flour", "1 c. sugar", "1/2 tsp. baking powder", "1/2 tsp. salt", "6 eggs, separated", "1 tsp. cream of tartar", "1/2 c. sugar", "1/4 c. water", "1 tsp. vanilla", "1/4 c. butter", "1/4 c. shortening", "3 c. sifted powdered sugar", "8 1/2 oz. can crushed pineapple, drained", "1/8 tsp. salt", "1/4 tsp. vanilla", "1/2 tsp. lemon rind, grated"]
["Sift together 1 cup sugar, baking powder and salt.", "Beat egg whites at high speed until frothy.", "Add cream of tartar.", "Gradually add 1/2 cup of sugar, beating until stiff but not dry and peaks form.", "Combine egg yolks, water, vanilla and dry ingredients.", "Beat at medium-high speed until thick and lemon colored (about 4 minutes).", "Gradually fold egg yolk mixture into egg whites.", "Pour batter into ungreased 10-inch tube pan.", "Bake at 350\u00b0 for 45 minutes.", "Invert to cool.", "Serve plain or frost with Pineapple Frosting."]
["flour", "sugar", "baking powder", "salt", "eggs", "cream of tartar", "sugar", "water", "vanilla", "butter", "shortening", "powdered sugar", "pineapple", "salt", "vanilla", "lemon rind"]