This gluten-free take on the classic angel food cake uses sorghum flour for a tender, airy crumb. Light as a cloud and perfectly sweet, it's an elegant dessert that pairs beautifully with lemon curd. Photo by Cole LoCurto. Serves 10-12 Ingredients ¾ cup sorghum flour ¾ cup gluten-free flour ½ cup cornstarch or arrowroot starch 1-½ cups powdered sugar, sifted 3 cups egg whites, at room temperature 3 teaspoons cream of tartar ¼ teaspoon salt 1-½ cups granulated sugar 2 teaspoon