Chocolate Cake Roll
["1/3 c. cake flour", "1/3 c. unsweetened cocoa powder", "2 tbsp. cornstarch", "1/2 tsp. baking soda", "1/2 tsp. baking powder", "1/3 tsp. salt", "4 large eggs, separated", "1 c. granulated sugar, divided", "confectioners' sugar"]
["Preheat oven to 350\u00b0.", "Line a 15 x 10 inch jelly roll pan with waxed paper.", "Grease and flour lined pan; tap out excess.", "In medium bowl, combine flour, cocoa powder, cornstarch, baking soda, baking powder and salt.", "Mix well.", "In a separate bowl, using an electric mixer set on medium speed, beat egg yolks and 1/4 c. sugar until fluffy.", "In a small bowl, using clean beaters, beat egg whites on high until foamy.", "Gradually add 1/2 c. sugar, beating until stiff, but not dry, peaks form.", "Fold 1/3 beaten egg whites into egg yolk mixture.", "Alternately fold in remaining whites and flour mixture.", "Pour batter in pan; smooth top.", "Bake until a toothpick inserted in center comes out clean, about 15 minutes."]
["cake flour", "cocoa", "cornstarch", "baking soda", "baking powder", "salt", "eggs", "sugar", "confectioners"]