JAMES BEARD'S SOUR CREAM CHEESECAKE

Steps:

• Mix 1 1/2 cups of graham cracker crumbs with sugar and butter. Press into bottom and sides of a lightly buttered 10-inch springform pan. Set aside.
• Beat the cheese until soft and creamy. Add sugar and mix thoroughly.
• Blend in egg yolks one at a time.
• Add the sour cream, vanilla, flour, lemon zest and lemon juice. Mix well.
• Beat egg whites until stiff but not dry. Stir in one-third of whites into cheese mixture. Then fold the remaining whites in gently.
• Pour the cheese mixture into the prepared crust.
• Bake in a preheated oven at 350 degrees F for one hour. Turn off the heat and allow the cheesecake to sit in the oven for one more hour.
• Remove to a wire rack and allow to cool to room temperature.
• Sprinkle the remaining crumbs on top of the cake.
• Chill over night. Dust with confectioner's sugar just before serving, if desired.