Keep the bottle in a bowl of hot water to keep the chocolate from hardening. Once the chocolate is melted, it can be poured into any number of molds, such as a flexible plastic ice-cube tray. Chill molds in the refrigerator for approximately 30 minutes before adding chocolate. After pouring the chocolate into a mold, add toppings such as nuts, cherries or marshmallows. Chocolate does not freeze well.
Frozen chocolate forms a bloom, which is a gray film on the surface of the chocolate.
It's not dangerous to eat, but it will look and taste bad.