My favorate drink is Bushmills whiskey, so this is a drink recipe:

Take the darkest non-milk Trade Aid chocolate shave off a few shavings and put in  a whiskey glass, pour over a double shot of Bushmills whiskey. Sip and enjoy whiskey with a slight chocolate hit.

Safe calorie wise as whiskey does not have to many calories and you will never be able to consume enough chocolate this way for calaries from the chocolate to be an issue. 

Preparation time incresses in direct relationship to the number of these you drink!

For a variation try:

Place a small (or large, it's up to you) strawberry (minus stalk) in whiskey glass.Take the darkest non-milk Trade Aid chocolate shave off a few shavings and put in whiskey glass.Pour over a double shot of  whiskey.Sip and enjoy whiskey with a slight strawberry chocolate hint. When whiskey is finished eat strawberry for a final whiskey hit with a strong strawberry flavour.