Spinal Tap

The Spinal Tap was a tavern that was located in the Southern Ring Caverns that catered to mind flayers.

Provender
The drinks of the tavern were made with cerebrospmal fluids. The fluids were flavoured with varying fungal additives and then mixed with alcohol.

Entertainment
Typically the tavern was supplied with entertainment through one or more thrivenists at a time who played an unique illithid instrument called a bonethriven.