Swelling Solution is a potion that causes enlargement on contact. The user needs to brew this solution to cause a diversion in Chapter 11, Moment 1 of the Chamber Of Secrets on Pottermore, so you can collect a bicorn horn and boomslang skin from Snape's office.

From the Story

"Second-year Hogwarts students brew Swelling Solution in Potions class. This potion causes things to grow and expand. Its effects can be reversed with a Deflating Draught."


Making the potion

Part 1:

  1. Add 2 scoops of dried nettles to the mortar
  2. Add 3 pufferfish eyes to the mortar
  3. Crush to a medium fine powder
  4. Add 2 measures of crushed mixture to your cauldron
  5. Heat on a medium temperature for 20 seconds
  6. Wave your wand
  7. Leave to brew and return in 2-3 hours.

Part 2:

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

Brew times

Time to return to cauldron

Points per hour ratio

Community content is available under CC-BY-SA unless otherwise noted.