Avery is known for making some pretty extreme beers, and they usually make a series of them. From their Dictator series to their Demons of Ales they make uniquely great beers some that I have tasted before. Mephistopheles is part of the Demons of Ales beer, along with The Beast, and Samael (which I tasted previously). This particular beer is an Imperial Stout.
The Beer: The beer weighs in at a stout (no pun intended) 16.03% and pours an inky jet black capped by the darkest brown foamy thick head that I have seen. The nose is of raisins, rum, hops, coffee and just a bit of astringent alcohol. The mouthfeel is thick and chewy, good carbonation, toasty and oaky, coffee, chocolate, raisins, with a bit of that rummy taste showing up as the beer warmed. Not much of that espresso bitterness that I was hoping for though, but on the upside not an overt amount of alcohol taste either. If I could compare it to one thing it would be a dense double dark chocolate coffee cake. Pretty nice beer, here's what the folks at BA had to say.