While baking, boil or microwave 1-2 cups of water and dissolve 1-2 tablespoons of sugar (proportionately 1 cup/1 tablespoon). Microwave or heat ~1/3-2/3 of frosting container in a separate bowl/mug for each layer of cake [amount depends on how much chocolate you want to add, and 1/2 vs full cake]. (See next steps below for more info).