Aura spice

Aura spice, also called Auraspice or Spice, was a valuable substance carried by General Luke Skywalker and his charge, the princess. They had 200 pounds of it concealed with them on Aquilae.

When the two bureaucrats evacuate to Aquilae from the space fortress, they find one of the hidden containers near their landing site. They fight over it and are captured by the General.

Han Solo smuggled Auraspice for the pirate Captain Oxus, apparently losing a shipment of Akurian spice with Montross. As a result he was deeply in debt to Oxus.

Text and facts from the “Aura spice” article on Wookieepedia, licensed under CC BY-SA 3.0. Modified for this site.