Scharffen Berger Extra Dark 82% cacao

Sharply bitter, no nuance. Lingering, bitter after taste. Earthy flavors dominate. Probably best experienced with a Port. 6.2

Later update:

I did try this with a Port over the weekend -- it stood up to the rich flavor of that drink, but it did not enhance the experience as much as other fine chocolates have for me in the past.