Chocolate Pie - cooking recipe

Ingredients

2 Tbsp. cocoa
2 eggs, yolk only (save whites for icing)
1 small c. sugar
pinch of salt
1 Tbsp. butter
2 Tbsp. flour or cornstarch
1 c. milk or water
1 Tbsp. vanilla

Preparation

Mix all together and cook until thick; pour into baked pie shell.