Passover Orange Sponge Cake

I found this recipe this morning at the www.dominosugar.com website. It is slightly different than the other ones listed on Zaar.

• Ready In: 55 mins
• Serves: 16
• Yields: 1 10 inch tube pan

Ingredients

• 1⁄3 cup  matzo cake meal
• 1⁄2 cup potato starch
• 1⁄8 teaspoon salt
• 10  eggs, separated
• 1  cup granulated sugar, divided
• 2  tablespoons lemon juice
• 1  tablespoon  orange rind, grated

Directions

1. Preheat oven to 350°F
2. Sift together matzo cake meal, potato starch and salt, 3 times; set aside.
3. In large mixing bowl beat egg yolks until thick. Gradually add 1/2 cup sugar, lemon juice and orange rind. Continue beating until thick and fluffy. Fold in sifted dry ingredients.
4. In separate bowl beat egg whites until foamy. Add remaining 1/2 cup sugar gradually. Beat until stiff peaks form. Fold egg yolk mixture into egg whites.
5. Spoon into ungreased 10-inch springform tube pan. Bake for 45-50 minutes. Invert pan until cake is cool.