Sour Lemon Pie

(Uses up extra egg yolks)

1 Graham Cracker Pie Crust or Pastry Crust already baked
1 cup sugar
1/3 cup cornstarch
1/4 teaspoon salt
1 3/4 cup water
4 egg yolks
1 tablespoon butter or margarine
2 teaspoons finely grated lemon peel
1/4 cup lemon juice
3 drops yellow food coloring
1/2 to 3/4 cup sour cream

In saucepan, combine sugar, cornstarch, and salt. Beat water and egg yolks until blended. Add to sugar mixture.

Stir constantly over medium heat until thick and boiling. Boil 1 minute. Remove from heat.

Add margarine, lemon peel, lemon juice and food coloring. Stir until margarine is melted. Stir in sour cream, blending until smooth.

Pour into crust. Chill 2 to 4 hours.