6 tbsp. flour
4 tbsp. cocoa
1 c. sugar
3 c. milk
1/2 stick butter

With a wire whisk mix cocoa, sugar, flour. Add milk slowly, stirring constantly. Cook over medium heat until thickened. Lower heat to low and add butter. Allow to melt without stirring. After butter has melted stir. Serve over hot biscuits while gravy is hot.