Chocolate Angel Food Cake 3 Recipe

Heat oven to 375°. Stir together flour, baking cocoa, and first amount of sugar. In a large bowl, beat egg whites and cream of tartar and salt until foamy. Add second amount of sugar 2 T at a time, beating on high speed until meringue holds stiff peaks. Gently fold in vanilla. Sprinkle flour and sugar mixture 1/4 cup at a time until flour and sugar mixture disappears. Push batter into ungreased tube pan. Bake at 30-35 minutes or until top springs back when touched lightly with finger. Invert tube pan upside down. Let stand until completely cooled. Cut cake out of pan with knife around edge.