Lemon Sponge Pie

Directions

1. 1
   Preheat oven to 400°F.
2. 2
   Combine the sugar and flour; add lemon juice and rind, egg yolks, butter, and salt.
3. 3
   Mix well.
4. 4
   Stir in milk.
5. 5
   Beat the egg whites until firm; fold into batter.
6. 6
   Pour into pie crust.
7. 7
   Bake 10 minutes, reduce temperature to 350°F; bake 30 minutes, or until pie springs back from light touch.
8. 8
   Cool on rack.