Sunburst Chiffon Cake
["2 c. sifted flour", "1 1/2 c. sugar", "3 tsp. baking powder", "1 tsp. salt", "1/2 c. oil", "7 unbeaten egg yolks", "3/4 c. water", "3 Tbsp. grated orange rind", "1 c. egg whites (7 or 8)", "1/2 tsp. cream of tartar"]
["Sift together the flour, sugar, baking powder and salt.", "Add oil, egg yolks, water and orange rind.", "Beat with mixing spoon until smooth.", "In mixer bowl, combine egg whites and cream of tartar; beat until very stiff and makes firm peaks.", "Fold egg yolk mixture into whites with rubber spatula.", "Pour into greased tube pan.", "Bake 55 minutes at 325\u00b0, then 10 to 15 minutes at 350\u00b0. Invert pan on funnel until cold."]
["flour", "sugar", "baking powder", "salt", "oil", "egg yolks", "water", "orange rind", "egg whites", "cream of tartar"]