Upside Down Lemon Custard Cups

Method

1. I

   In bowl blend butter, egg yolks and lemon juice, stir in zest, salt, sugar and flour beat til smooth; add milk and stir to blend.

2. II

   Beat egg whites til stiff but not dry; fold whites into yolk mixture; turn into 6 buttered custard cups set in pan of hot water bake 30-35 minutes at 375 degrees F.

3. III

   Chill, Turn out onto dessert dish upside down.