This is from Small, Sweet, and Italian by Maria Bruscino Sanchez (http://www.amazon.com/Small-Sweet-Italian-Treats-Marias-ebook/dp/B00CQYBA6G)
Here are the ingredients:
1/2 cake flour
pinch of salt
3/4 cup sugar
5 egg whites, at room temperature
1/2 teaspoon cream of tartar
Seasonal fruit (optional)
Preheat oven to 350 degrees
Combine flour, salt and 1/2 cup of sugar and set aside.
Using a wire attachment, beat the egg whites and cream of tartar on high speed until soy peaks form. With the mixer running, add the remaining 1/4 cup sugar and beat until Stiff.
Gently fold the flour mixture into the egg whites.
Fil the cupcake pans with 3/4 full with batter. The angle food cakes will grow so don't over fill.
Bakes cupcakes for 15-20 minutes. Remove from over, let cook, serve with fruit or homemade frosting. Decorate and enjoy.