Pacifog
this mind-altering substance was created in an Imperial laboratory in orbit around Kadril, under the direction of Darth Vader, sometime after the Battle of Yavin. Pacifog had the unique ability to emphasize the weakest traits of beings, traits which could be used by the Empire to achieve its own goals. However, in order to ensure that Imperial troops who used pacifog were not subjected to its effects, Darth Vader ordered a huge quantity of kunda stones from Dal Quirz and the Kadrillians. Kunda stone was grown in zero-gravity labs, and could absorb and filter out pacifog. Vader planned to use the kunda stones in manufacturing filter masks for Imperial troops. Unfortunately for Vader, pacifog had an intense reaction to human biology, swiftly reducing human flesh to a frothy ooze.