1 can evaporated milk
4 Tbs. butter
mix together:
4 Tbs. cocoa
4 Tbs. flour
2 c. sugar
at last add:
2 tsp. vanilla

Mix dry ingredients in pan with a spoon, using the back to break up clumps. Add butter and evaporated milk. Stir until boiling, then boil for 2 min. Pull off heat and add vanilla.