Get a tin of this, and make it with semi-skimmed or whole milk. Delicious.
Alternatively, call in at this cafe, and enjoy the best hot chocolate you will ever taste. The cafe has been around for a while but you'll be prepared to overlook that when you sit there, drinking your chocolate and watching the world go by in the square.
Once upon a long time ago I worked in the West End for Telephone Rentals as was and Charbonnel et Walker were on my sub district. You could buy misshapes for a £1.00 a pound. And I was told of the source for the coffee flavour in their coffee creams!
I concur with your opinion of their drinking chocolate.