Angel Food Cake

In a very large mixing bowl allow egg whites to stand at room temperature for 30 minutes. Meanwhile, sift powdered sugar and flour together 3 times; set aside.

Add cream of tartar and vanilla to egg whites. Beat with an electric mixer on medium speed until soft peaks form (tips curl). Gradually add granulated sugar, about 2 tablespoons at a time, beating until stiff peaks form (tips stand straight) .

Sift about one-fourth of the flour mixture over beaten egg whites; fold in gently. (If bowl is too full, transfer to a larger bowl.) Repeat, folding in remaining flour mixture by fourths. Pour into an ungreased 10-inch tube pan. Gently cut through batter to remove any large air pockets.

Bake on the lowest rack in a 350 degree F oven for 40 to 45 minutes or until top springs back when lightly touched. Immediately invert cake (leave in pan); cool thoroughly. Loosen sides of cake from pan; remove cake. Makes 12 servings.