Chocolate Pie - cooking recipe

Ingredients

4 egg yolks
2 c. sugar
3 Tbsp. flour
1 (26 oz.) can Pet milk
1 (26 oz.) can water
3 heaping Tbsp. cocoa
1 Tbsp. margarine
1 tsp. vanilla

Preparation

Combine beaten egg yolks, sugar, milk, water, cocoa and flour in top of double boiler.
Cook until thickened.
Add margarine and vanilla.
Pour into 2 cooked pie shells.