Lowest Fat and Carbs as possible.
This is the one I buy,
Morrisons Instant Hot Choc Drink
per 100g
Carbs 77.7g
Fat 2.2g
Instructions says to put 3-4 heaped teaspsoons in the drink, but I only do 1 heaped spoon. So works out to be about 5-7g. As said on other thread, I don't drink it that often, and its a tolerated item. Just have it once or twice a week.