You can use all sorts of weird and wonderful ingredients in this cauldron, from silver unicorn horns to minuscule, glittery, black beetle eyes.
Brewing potion in copper cauldron
The Copper Cauldron is used for brewing potions.
Brewing potions in a Copper Cauldron reduces the time you need to wait for certain potions to finish brewing. It does not, however, become hotter faster than the Pewter Cauldron or Brass Cauldron, so it takes the same time to heat the mixture in your Copper Cauldron up to the correct temperature as the other cauldrons.
A Copper Cauldron can be bought from Potage's Cauldron Shop for 25 Galleons.