Okay -- heat one can of skim evaporated milk with two cans of skim milk. In a cup mix one tablespoon of Hershey's Cocoa with 2 tablespoons of sugar. Mix in some warm milk to form a thin paste. Poor steaming hot milk into paste and stir until dissolved. Drink! No marshmallows or whipped cream needed. It's rich and delicious!
If I'm out of canned milk, Hershey's Vanilla Hot Chocolate mix is the best! Or Raspberry Hot Chocolate mix.