New York Cheesecake
["1 lb cream cheese", "1 lb Ricotta cheese", "2 c sugar", "4 eggs", "1/2 c flour", "1 tsp vanilla", "1/4 lb soft butter", "1 pint sour cream"]
["Put cream cheese, Ricotta cheese, sugar, eggs, flour, vanilla, butter and sour cream in large mixer bowl.", "Beat at high speed for 20 minutes.", "Pour into 9 or 10 inch buttered spring form pan.", "Bake at 350\u00b0 for 1 hour.", "Turn off oven and let stand for 2 hours.", "Will keep 4 weeks in refrigerator.", "Serves 16."]
["cream cheese", "Ricotta cheese", "sugar", "eggs", "flour", "vanilla", "butter", "sour cream"]