Low-Fat Chocolate Espresso Angel Food Cake
["1 1/4 c. sifted cake flour", "1 1/4 c. sugar", "1/3 c. unsweetened cocoa", "1 tsp. cinnamon", "12 egg whites", "1 tsp. cream of tartar", "1 Tbsp. instant Espresso powder", "2 Tbsp. warm water", "1 tsp. vanilla extract", "1 Tbsp. powdered sugar"]
["Sift flour, 3/4 cup sugar, cocoa and cinnamon 3 times; set aside.", "Beat egg whites and cream of tartar in a large bowl at high speed until foamy.", "Gradually add remaining 1/2 cup sugar, beating until soft peaks form.", "Sift flour mixture over egg white mixture, 2 tablespoons at a time.", "Fold gently after each addition.", "Combine Espresso powder and water.", "Fold Espresso mixture and vanilla into batter.", "Spoon batter into an ungreased 10-inch tube pan; spread evenly.", "Bake at 300\u00b0 for 50 minutes or until cake springs back when lightly touched.", "Remove pan from oven; invert and cool completely.", "Loosen cake from sides of pan, using a metal spatula.", "Sift powdered sugar over cake."]
["cake flour", "sugar", "unsweetened cocoa", "cinnamon", "egg whites", "cream of tartar", "Espresso powder", "water", "vanilla extract", "powdered sugar"]