Royal Wine

Royal Wine is a substance used by Emperor Calus during his time commanding the Leviathan. It is a thick, glistening purple liquid derived from the soil of planetoids consumed by the Leviathan, such as Nessus, that has been mixed with psionics-enhancing spores from plants in Calus' Pleasure Gardens. Due to the abundance of wine produced by the Leviathan, it began overflowing throughout the ship, solidifying into dark purple crystalline substances.

By the time Katabasis encountered Calus in the flesh, the Emperor was contained within a support system which pumped Royal Wine directly into his body.