Fresh Orange Chiffon Cake
["2 1/4 c. sifted cake flour", "1 1/2 c. sugar", "1/4 tsp. salt", "3 tsp. baking powder", "1/2 c. Crisco oil", "5 unbeaten egg yolks", "juice of 2 oranges and enough water to make 3/4 c.", "2 Tbsp. grated orange peel", "1 c. egg whites (7 to 8 eggs)", "1/2 tsp. cream of tartar"]
["Sift flour.", "Measure lightly into cup; then sift again with sugar, salt and baking powder.", "Make a well in center and slowly add oil, blending well.", "Add yolks, one at a time, stirring until well mixed.", "Add orange juice and peel and beat with a spoon until mixture is smooth.", "Beat whites with cream of tartar until stiff. Pour yolk mixture into beaten whites and gently blend together. Bake in ungreased 9-inch tube pan in a preheated 325\u00b0 oven for 50 to 60 minutes.", "Frost with Orange Cream Icing."]
["cake flour", "sugar", "salt", "baking powder", "Crisco oil", "egg yolks", "oranges", "egg whites", "cream of tartar"]