Angel Cake

Directions

1. 1
   Sift together powdered sugar and flour; repeat sifting twice. In a large mixer bowl, beat egg whites, cream of tartar, vanilla and 1/4 teaspoon salt at medium speed of electric mixer until soft peaks form.
2. 2
   Gradually add granulated sugar, about 2 tablespoons at a time.
3. 3
   Continue beating until stiff peaks form.
4. 4
   Sift about 1/4 of the flour mixture over whites; fold in lightly by hand.
5. 5
   If needed, transfer to a larger bowl.
6. 6
   Repeat, folding in remaining flour mixture by fourths.
7. 7
   Turn into an ungreased 10-inch tube pan.
8. 8
   Bake on lowest rack in 350° oven for about 40 minutes or until done.
9. 9
   Invert cake in pan; cool completely.
10. 10
    Loosen cake from pan; remove.
11. 11
    Serves 12.