What happens next?

How to make chocolate truffles
Prepare the double boiler (also known as a bain marie).
Place a medium cooking pan in a high heat and pour around 1 liter (0.3 us gal) of water. Bring the water to a.
Place the chocolate bar on a chopping board and cut or break it into squares. Usually, following the lines on the chocolate will suffice, unless the bar is divided into very large pieces.