I'm not really sure what to say about this.  Someone in the office was talking about it and then brought a bar in.  It's best if you don't chew it.  Then you get the chocolate flavour first followed by the subtle hints of Marmite.

It sounds like it would be disgusting but it isn't bad. It's definitely not what your taste buds would expect when eating chocolate.  You start off thinking it tastes just like dark chocolate and then the Marmite sort of breaks through.  The first bite is a bit of a shock and then it gets better.

If anyone's interested - in the UK certainly - we got ours at Robert Dyas, which is a strange place to buy chocolate at the best of times, for £3 a bar.