Swelling Solution

Causes something to get bigger


  • bat spleens
  • dried nettles
  • pufferfish eyes


Pottermore Instructions

Part 1

  1. Add 2 scoops of dried nettles to the mortar
  2. Add 3 puffer-fish eyes to the mortar
  3. Crush into a medium-fine powder
  4. Add 2 measures of the crushed mix to your cauldron
  5. Heat on a medium temperature for twenty seconds
  6. Wave your wand
  7. Leave to brew and return in 60 minutes (or more, depending on type of cauldron you have)

Part 2

  1. Add 1 bat spleen to the cauldron
  2. Stir 4 times, anti-clockwise
  3. Heat to low for 30 seconds
  4. Wave your wand to complete the potion

References from the canon

  • The second year students were making this when Harry threw a firecracker into Goyle's cauldron to create a diversion so Hermione could steal ingredients for Polyjuice Potion from Snape's closet. Where the solution splashed, people's arms, noses, eyes, etc. were enlarged grotesquely. The antidote was a Deflating Draught (CS11).


Pensieve (Comments)

Tags: fish illnesses and injury swelled