If you have a microwave, you don't need to be doing this to yourself. It's as easy to make
Clipper Fairtrade Organic Drinking Chocolate with a mug and milk, as it is to make this with a kettle and water.
The difference between the two is the same with fresh coffee and the instant variety - once you get into the proper stuff, there'll be no going back to this. It has none of the creamy texture, and little intensity in comparison. If you really have to have water-based drinking chocolate this is the best tasting, though.