Lemon Angel Food Cake

Name: Angel Food Cake
Yield: 15
Ingredients: 2 Lemons, zest of; 1 1/2 cups Egg whites from; 1 1/4 cups Cake flour; 1 tsp Cream of tartar; 3 1/2 tsp Lemon extract; 1/4 cup Powdered sugar; 1/4 tsp Salt; 1 1/2 cups White sugar; 1 1/2 cups Heavy cream