Ectoplasmic Residue

Ectoplasmic Residue is the etheric remains of undead creatures.

Trivia

 * During Release 7, ectoplasmic residue could occasionally be found. This was replaced by Corpse Wax, as the former name was not "gameworld compliant", likely due to the Ectoplasm reagent.
 * This was reversed at some later time, and both corpse wax and ectoplasmic residue can be found on undead.