- Xenophilius Lovegood: "Everybody always requests our recipe for Freshwater Plimpy soup."
- Ronald Weasley: "Probably to show the Poisoning Department at St. Mungo's."
- — Xenophilius Lovegood and Ronald Weasley[src]
The Poisoning Department was a section of St. Mungo's Hospital for Magical Maladies and Injuries, presumably dedicated to dealing with poisons. It was most likely located on the building's third floor, which deals with poisons and plant poisoning. While visiting Xenophilius Lovegood on 30 December, 1997 and being offered Freshwater Plimpy soup, Ronald Weasley retorted under his breath that people probably request the recipe to show to this department.
- Harry Potter and the Deathly Hallows (Mentioned only)