Large gyrating paddles grind tons of sargasm paste into white gas, driven by unseen eldritch machinery. The thick black sludge is dragged back and forth across a coarse table, its pearly clear essence deviating into a large clay jug at the south west corner of the room. The white gas is highly flammable, burns slowly and clean, and can fuel a lantern for an entire day; 3 flasks can burn as a campfire for an entire day as well. If sold above ground, each flask is worth 15 gp and the jug holds 30 flasks worth. It smells terrible and tastes worse. If ingested save v. poison or go blind and die of organ failure in 1d10 days without restoration magic.