This black ooze, harvested from the corpse of a demonic entity, steams slightly when exposed to air.
Blood is used to increase the potency of the blasphemous rituals of both priests and sorcerers. And this is particularly potent blood.
The nature of demons is hotly disputed by scholars. Some suggest that they are simply remnants of elder races that stalked the earth before mankind, while others insist that they are formless creatures from the outer void given form by the incantation of vile sorceries.