Lemon Pie - cooking recipe

Ingredients

1/2 stick butter
1 c. sugar
4 Tbsp. flour
2 c. milk
3 egg yolks
rind of 1 lemon and juice
1 (9-inch) baked pastry shell
3 egg whites
1/4 tsp. cream of tartar
6 Tbsp. sugar

Preparation

Melt butter; add 1 cup sugar and flour, blending well. Gradually add milk.
Heat over low heat until it begins to thicken.
Beat egg yolks; add lemon juice and rind.
Gradually add about 1 cup of hot milk mixture to eggs.
Combine the 2 mixtures and cook until thick, stirring constantly.
Pour into baked 9-inch pastry shell.