Brew your coffee as normal.
While your coffee is brewing, put your chocolate in a heat-resistant bowl that is large enough to fit securely over a pot. You may need to use more chocolate than the recipe requires. Although you can use a microwave to melt chocolate, it burns easily, so the stovetop method allows for more control.
Fill the pot with water and put the bowl over it.
Boil the water.
Continuously stir as the chocolate begins to melt to prevent it from burning.
Add the melted chocolate to a mug and pour the hot coffee over it.
Stir well and enjoy.