Kit Kat- Dark Bitter

This is the Dark Bitter Kit Kat, It was sent to me as a freebie along with some items I purchased on eBay.

It has the same structure as a normal Kit Kat with dark chocolate that has a slight bitterness to it but if I were not looking for that flavor I wouldn't have really noticed it. The bar is nice and crisp and the over all flavor is good but it isn't anything special.