Front of the Orange Sponge Cake recipe card. This is the only recipe I see in red type within the recipe box.

Orange Sponge Cake
Ingredients
- 5 egg whites
- 2 cups sugar
- 5 egg yolks
- 2 cups flour
- 3 teaspoons baking powder
- 1/2 cup water with enough orange juice to fill the cup
Icing
- Powdered sugar
- Orange juice
Instructions
- Place egg whites in a large bowl and leave for 30 minutes
- Beat egg yolks until thick and lemon-colored.
- Gradually beat in sugar.
- Sift flour and baking powder
- Fold flour mixture into egg yolks
- Add orange juice
- Beat egg whites until stiff and fold into batter
- Bake on the lowest oven rack at 325° for 45-55 minutes or until cake springs back when lightly touched.
- Immediately invert pan; cool completely, about 1 hour.
- Ice with powdered sugar and orange juice
COOK’S NOTES
- I created the method since sponge cake ingredients have an order in putting it together. If you have any suggested changes to the method, comment below.
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