Potion of water
|A unique substance, vital for the existence of most life.|
A potion of water tastes, as expected, "like water", and gives 60 nutrition (slightly less than consuming a sultana). However, when thrown with the Evaporate spell, it creates a 3×3 cloud of steam for a few turns that will damage enemies and block LOS.
Transmuters may start with some of these, and they can be distilled from clean corpses via the spell Fulsome Distillation. When found naturally, they can easily be identified by their unique description as "clear potions."
Potions of water were removed in 0.12.