Ricotta Cheese Cake

Ingredients

3 ricotta
2 c sugar
1/2 c flour
8 egg yolks
1 rind of lemon
1 ts vanilla
1/2 c cream
8 egg whites
1 1/2 cups sugar
1/2 cup sugar
12 spring form which has been well buttered
425 degree oven for the first

Instructions

and bake for 1 hour. Turn off heat and allow to cool in oven with door closed. Freezes well. Dust with powdered sugar when served.