Chocolate Pie - cooking recipe

Ingredients

3 egg yolks
3 egg whites
1 1/2 c. sugar
3 Tbsp. cocoa
2 c. Pet milk
a good hunk of butter
1/2 tsp. vanilla
2 1/2 Tbsp. flour
1 pie crust

Preparation

Combine yolks, sugar, cocoa, flour, milk and butter.
Cook over moderate heat until thickened.
Remove from heat; add vanilla.
Pour into baked pie shell and cover with margarine. Bake in moderate oven until set.