For those who return from the Undermountain, a Pieglass may be raised. For those that do not, there is the Bitter Black. This blend of stout, syrup, and dark coffee is as bitter and black as its name and as bitter and black as the mood of those who leave friends or loved ones behind beneath the mountain. There is a cruel uncertainty when no members of an adventuring party return through the portal: Could they still be alive? Have they found some other way out? There is an equally cruel certainty when only some of a party return with news that they saw their friends devoured by spiders, drowned in the Slitherswamp, or torn to pieces by goblin werebats.
There is no dollop of ice cream in a pint glass for the tired and traumatized survivors of such an experience. They have stared into the bitter black, and all they can hope to do is to take strength from it.