Add the chocolate and cream to a large mixing bowl.
Set atop a pot of steaming water, do not let the water touch the bottom of the bowl.
Stir with a wooden spoon or silicon spatula until all lumps have melted.
Fold through the liqueur or flavouring.
Remove the bowl from the steam and place it in the fridge.
Allow the mix to set, 1-2 hours.
Meanwhile toast and cool any nuts or coconut with which you may wish to coat the truffles.
Once the mixture is set and firm remove from the fridge.
Take teaspoon size scoops and roll the mix into balls, (can be larger or smaller depending on your preference).
Place on lined trays, may need to be placed back in fridge if it is a warm day.
Wash and dry your hands.
Roll balls in mix of your choice, nuts will need to be pressed on as you roll and for finer ingredients like cocoa you can just toss the ball in a bowl of sifted cocoa.
Kept in the fridge, they will keep up to 2 weeks.
Kept out of the fridge they will last 4-5 days.
Serve at room temperature.
They make a great gift in decorative boxes as well.