This Totally Rocks The Best Angel Food Cake Recipe I've ever used, Thanks to Better Homes and Gardens New Cookbook Were the recipe came from. It happens to be in my personal recipe collection The cookbook that is.
In an extra- large mixing bowl allow egg white white 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 till soft peaks form (tips curl) Gradually add sugar about 2 Tablespoons at a time , beating until stiff peaks form (tips stand straight).
Sift about one-fourth of the dry mixture over beaten egg whites; fold in gently. (if bowl is to full, transfer to a larger bowl) Repeat, folding in remaining dry mixture by fourths. Pour into an ungreased 10-in tube pan. Gently cut through batter to remove any large air pockets
Bake on the lowest rack in a 350* oven for 40-45 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.