It was a wasabi Kit Kat all the way from Japan, courtesy my cousin.
Yup, a wasabi Kit Kat. Apparently Japan has a thing for flavoured Kit Kat. You can get everything from rather tasty sounding Berry Wine and Custard Pudding to the downright strange Camembert Cheese, Lemon Vinegar and Soya Sauce varieties. They even have regional versions that vary from north to south based on locally preferred delicacies. This site has a run down of some of the more unusual flavours.
Anyone who has added too enthusiastic a helping of wasabi to their sushi will know that wasabi is a taste - or more a sensation - that needs a bit of getting used to. The root, known as Japanese horseradish, has a similar burn-your-nasal-passages effect that hot mustard has. Not really a flavour I'd imagine going well with chocolate. Chocolate + chilli, yes, and if done right really delicious. Chocolate and wasabi? I wasn't convinced.
For starters I was expecting dark chocolate. But the wasabi Kit Kat was a very light green achieved by adding wasabi to white chocolate. I think the wasabi + white chocolate combo worked well - sweet to start off with, then the crunch of the wafer, followed by the lingering wasabi flavour. Pungent but surprisingly light, I'm glad the wasabi didn't make it's presence too prominently felt.
All in all, I'd eat it again - which isn't really what I expected to say when I first heard about my edible Japanese present :)