Per the FAQ:
The Pot item says that "during the night you can exchange 1 food for 1 health". Can
this only be applied once? Or does it mean "only once each round", like the
If I have the Pot item, can I discard 2 food to heal 2 Wounds or can I use it only
once per turn?
You can use it only once per turn, to heal 1 Wound.
FAQ 1.01; Z-Man 2nd ed., p. 17 (rule 3 before the list of Inventions)