Mama'S Chocolate Pie - cooking recipe

Ingredients

3 Tbsp. cocoa
2 c. sugar
3 Tbsp. flour (not heaping)
2 c. milk
3 egg yellows
1 Tbsp. butter
1 tsp. vanilla
1 cooked pie shell

Preparation

Mix cocoa, sugar and flour, then add milk and egg yellows. Stir and cook on low heat until thick.
After the mixture has thickened, add butter and vanilla.
Pour into baked pie shell.