In a bowl mix:
1/2 cup flour, 1/4 cup cocoa, 3/4 cup sugar
Add 3/4 cup evaporated milk and mix well. (I use 1/4 cup evaporated milk, then add enough water to make 3/4 cup) Bring to boil 3 cups water. Add above mixture to boiling water, stirring as you add mix. When thick add 1 tsp vanilla and 2 tbsp. butter. Serve with hot biscuits.