1 c. sugar
1 c. flour
2 (heaping) tbsp. cocoa
1 c. evaporated milk
2 c. water
1/2 stick butter

Mix well sugar, flour and cocoa. Whisk dry ingredients with water and milk. Whisk until all lumps are gone. Microwave on high for 3 minutes. Stir well. Microwave 2 minutes longer. Stir again. If not thick as desired, microwave 1 minute longer. Stir in butter. Serve with hot homemade butter biscuits.