I love mix a mousse, have a choc mint one every night without fail.
Not sure really how to describe it, not really a mousse, more like a blamonge thing (I know thats not spelt right!!).
Its a bit like the shake flavours, some love it, some hate it (my mum and sister both detest it!).
Just off to make mine now as a matter of fact!
Give it a try, good luck x