Good-Cooking - Fresh Orange Sponge Cake

Ingredients

• 6 egg whites
• 1 3/4 cups flour, measured, then sifted
• 1/2 teaspoon salt
• 1 1/2 cups granulated sugar
• 6 egg yolks
• Orange oil, optional (see Note)
• 6 tablespoons fresh orange juice
• 1 tablespoon grated orange peel
• Powdered sugar, optional