4 CHEESE CHEESECAKE

Steps:

• Preheat oven to 350°F.
• Thoroughly butter the bottom and sides of a 9x3-inch (12 cup) springform pan.
• Dust pan well with fine Zwieback crumbs, pressing any remaining crumbs into the bottom of the pan and about 1/2 to 1 inch up the sides; set aside.
• Sift flour and corn starch together into a small bowl or cup, and set aside.
• In a small bowl, beat eggs and sugar together until thick and sugar is dissolved, set side.
• Mix together ricotta and baker's cheese, place into a fine sieve and using a wooden spoon, force the cheeses through the sieve into a large bowl.
• With mixer on medium speed, beat cheeses for about 2 minutes or until creamy.
• Add cream cheese, and beat on low speed for about 1 minute, or until well blended.
• Add mascarpone, and beat by hand with a wooden spoon or spatula until well blended.
• Add melted butter, mixing by hand until well blended.
• Add egg/sugar mixture, mixing by hand until well blended.
• Add flour/corn starch mixture, stirring until thoroughly incorporated.
• Add lemon juice and vanilla, stir until well blended.
• Fold sour cream into cheesecake batter.
• Tap bowl of batter on counter several times to get any bubbles in the batter to the top.
• If necessary, run the spatula through the batter to break up any air bubbles.
• Slowly pour the batter into prepared pan, lightly tap pan on counter to remove any remaining bubbles.
• Place cheesecake on middle rack in oven and bake at 350°F for 50 to 60 minutes.
• Turn off oven, and let cheesecake sit undisturbed (do not open oven door), 60 minutes longer.
• Remove from oven and continue to cool on wire rack.
• When completely cooled, cover and refrigerate for at least 2 hours before serving.
• When ready to serve, run a thin bladed knife or icing spatula between the cake and sides of pan to loosen cake from the sides.
• Remove the side of the springform pan, leaving the cake on the pan base/bottom to serve.
• (Optional) Cake may be topped with fresh fruit, pie filling or your favorite fruit glaze.