Cheese Cake

Directions

1. 1
   Mix the last 3 ingredients and put in spring-form pan that has been dusted on bottom and sides.
2. 2
   Beat egg yolks until thick and lemon colored.
3. 3
   Beat in sugar.
4. 4
   Break up cream cheese; add sour cream and egg mixture, beating until smooth.
5. 5
   Add sour cream, flour and vanilla.
6. 6
   Continue beating until smooth.
7. 7
   Beat egg whites until stiff, but not dry.
8. 8
   Gently fold into cheese mixture.
9. 9
   Heat oven to 275°.
10. 10
    Bake 70 minutes.
11. 11
    Turn oven off and leave in 1 hour without opening oven door.