Italian Made Chocolate Angel Food Cake

Ingredients:

12 Egg Whites, at room temperature
3/4 cup of Cake Flour
1/3 cup of Cocoa Powder
1 1/2 cups of Granulated Sugar
1 1/2 tsp of Cream of Tartar
1 tsp of Instant Espresso Powder
1 1/2 tsp of Vanilla Extract
1/4 tsp of Salt