Causes the user (or victim) to begin burping
- Argus Filch: "What are you doing?"
- Harry Potter: "Nothing."
- Argus Filch: "Nothing! A likely story! Sneaking around on your own -- why aren't you in Hogsmeade buying Stink Pellets and Belch Powder and Whizzing Worms like the rest of your nasty little friends?"
- — Filch grilling Harry about why he wasn't in Hogsmeade.[src]
Ingredients for Belch Powder included Mummy, Mastick, Red Myrrhe, Olibanum, Ammoniacum, Oppopanax and Bdelium (2 drachms of each), 2 pounds of Vitriol, 2 pounds of Honey, half an ounce of Tartar, and 3 gallons of Aquavitæ.
Behind the scenes
- The ingredient list for the Belch Powder boxes, as featured in Harry Potter Wizard's Collection seem to have been copied directly from a 1656 copy of The Archidoxes of Magic, by Paracelsus. The excerpt in question is actually a list of ingredients for a "Celestial Medicine" against the gout.
- Harry Potter and the Prisoner of Azkaban (Mentioned only)
- Harry Potter Wizard's Collection (Mentioned only)