Cheese Cake
["1/4 c. butter or margarine, softened", "1 c. graham cracker crumbs (fine)", "1 tsp. cream of tartar", "6 eggs, separated", "3 Tbsp. sugar", "19 oz. cream cheese", "1 1/2 c. sugar", "3 Tbsp. flour or cornstarch", "1/2 tsp. salt", "1 pt. sour cream", "1 tsp. vanilla extract"]
["Have all ingredients at room temperature.", "Butter 9-inch spring-form pan.", "Mix butter and crumbs well.", "Reserve 1/4 cup and press the remainder firmly on the bottom of the pan.", "Add cream of tartar to egg whites and beat until foamy.", "Gradually add 3 tablespoons sugar and beat until stiff.", "Set aside."]
["butter", "graham cracker crumbs", "cream of tartar", "eggs", "sugar", "cream cheese", "sugar", "flour", "salt", "sour cream", "vanilla extract"]