Austrian Cheesecake

Directions

1. 1
   Preheat the oven to 300 degrees F. Press the cheese through a sieve.
2. 2
   In a large mixing bowl, beat together the cheese and sugar until light.
3. 3
   Add the egg yolks, one at a time, beating well after each addition, then add the milk, lemon rind, and vanilla.
4. 4
   Stir in the flour and blend until smooth.
5. 5
   In another large mixing bowl, beat the egg whites until they form soft peaks, then gradually add the confectioners' sugar beating until they form stiff peaks.
6. 6
   Fold the whites into the cheese mixture.
7. 7
   Gently stir in the rai