Italian Cheesecake
["1 lb. Ricotta cheese", "1 lb. cream cheese", "1 1/2 c. granulated sugar", "4 eggs, slightly beaten", "1 tsp. vanilla", "1 tsp. lemon extract", "3 Tbsp. all-purpose flour", "3 Tbsp. cornstarch", "1/2 c. butter, melted and cooled", "2 c. dairy sour cream", "graham cracker crumbs"]
["In large mixing bowl with an electric mixer, cream Ricotta cheese and cream cheese.", "Add sugar, eggs, vanilla and lemon extract; mix well.", "Add flour and cornstarch, then add melted butter.", "Fold in sour cream.", "Grease a 9-inch spring-form pan and sprinkle generously with graham cracker crumbs.", "Pour cheese mixture into pan.", "Bake in preheated 325\u00b0 oven for 1 hour.", "Then turn off the heat and leave cake in oven 2 hours.", "Do not open the oven door during the 3 hours cake is in oven.", "This is most important step of recipe.", "After the 3 hours, remove cheesecake from oven and cool completely.", "Store in refrigerator until serving."]
["Ricotta cheese", "cream cheese", "sugar", "eggs", "vanilla", "lemon extract", "flour", "cornstarch", "butter", "sour cream", "graham cracker crumbs"]