Pasta brillante
Glowpaste is a fluorescent substance found on Threnody.[1]
As kindling a fire would immediately enrage the ever-present shades, typically fire was not used for illumination in the Forests.[1] The inhabitants of the Forests relied on glowpaste, a liquid that once mixed and would provide a dim, but steady, pale green light. Glowpaste was often placed in glass jars that were tied to poles, serving as lanterns. When the user wanted the light extinguished, they simply covered the jar with a black covering. Glowpaste can make shades glow in its light.
There were two variants of glowpaste.[1] The more common type was far brighter. The other variant, known as Abraham's Fire was far dimmer. It had an added benefit, though, in that its light made wetleek sap glow in the dark.
Silence Montane made use of glowpaste when hunting bounties, both to light her way and to follow the trail left behind by horses that had drunk wetleek sap mixed with water.[1]