Cheese Cake - cooking recipe

Ingredients

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

Preparation

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.