Foolproof Angel Food Cake - cooking recipe

Ingredients

1/2 c. sifted cake flour (sift before measure)
2 c. sugar
1 1/2 c. egg whites
1/2 tsp. salt
1 1/2 tsp. cream of tartar
1 1/2 tsp. vanilla
1 tsp. alum

Preparation

You will need an angel food cake pan for this recipe.