Chocolate Pie - cooking recipe

Ingredients

1 c. sugar
4 Tbsp. flour (heaping)
2 level Tbsp. cocoa
4 egg yolks
2 1/2 c. evaporated milk
1/2 stick margarine
baked pie shell

Preparation

Mix well flour, sugar and cocoa together.
Stir in 2 cups milk and heat on low heat.
When warm, beat the remaining 1/2 cup of milk with the egg yolks.
Pour into warm mixture slowly, stirring constantly, until mixture thickens.
Add margarine.
Pour in baked pie shell.