Chocolate Pie - cooking recipe

Ingredients

2 c. milk
1 c. sugar
3 eggs, separated
3 Tbsp. cocoa
4 Tbsp. flour
1/2 stick oleo
vanilla
1 (9-inch) unbaked pie shell

Preparation

Mix sugar, flour and cocoa.
Add milk.
Cook and stir until mixture begins to thicken.
Then, take a small amount and add to beaten egg yolks.
Return this to chocolate mixture and cook and stir until very thick.
Remove from heat and add oleo and vanilla. Beat vigorously.