Chocolate Custard - cooking recipe

Ingredients

3 c. milk
3 Tbsp. cocoa
10 Tbsp. flour
3 egg yolks
pie shells, baked
1 1/2 c. sugar
1/4 tsp. salt
2 Tbsp. butter
1 tsp. vanilla

Preparation

Mix sugar, flour, eggs, milk and cocoa.
Cook in top of double boiler over hot water until thick, stirring constantly.
Cool. Add butter and vanilla.
Pour into baked pie shells.