Biscuit Torte (Biskuittorte) - cooking recipe

Ingredients

2 cups sugar
8 eggs, separated
1 lemon, rind of, grated
2/3 cup flour, sifted
2/3 cup cornstarch, sifted
1 teaspoon baking powder (optional)
1 tablespoon sugar

Preparation

Preheat oven to 250 degrees F Butter and flour a 8\" or 9\" spring form pan.
Beat egg yolks with 2 cups sugar and lemon rind until very thick and pale.
Sift flour and cornstarch together (and baking powder of using).
Beat the egg whites, when they begin to thicken beat in 1 T sugar. Continue beating until stiff peaks will stand.
Add egg yolk onto egg whites, sprinkle with flour mixture and fold together with a rubber scraper gently but thoroughly.
Turn batter int prepared pan, bake for about 1 hour, until it springs back when gently pressed with a finger.
Cool 15 minutes in the pan then turn it out onto a rack to finish cooling.