A form of beer, specifically a stout, brewed incredibly strong so as to survive long sea journeys.
It is 10% alcohol, jet black, consistency of cough syrup, and tastes almost exactly like chewing tobacco. Served at room temperature. Beer as man was meant to drink.
By the time you get one glass down you're half-buzzed, your tastebuds are dead and you're not hungry for dinner anymore.
In short, it is the only true Man Beer in the world and will put some hair on your ass.
Real men drink Imperial Stout.