Peasant's Kuksa
A wooden cup carved from fine birch burl. Any liquid scooped by the cup turns into adequate drinking water.
Sold by Mikhael the Merchant in Wästland for a portion of the buyer's soul. "Adequate" is doing most of the work in this sentence — the kuksa does not make wine, only the absence of dying.
Connections
Gaps / Expansion Notes
Whether the kuksa transmutes a scooped potion (Elixir Vitalis? Emerald Venom?) into water is the question that will eventually break it.