"I'm afraid," he says, "That I must charge twenty five gems to purify any item.  The price is non negotiable as it requires several gems during the process.  You see, gems are laden with magic and can be consumed to fuel spells.  Once an item is purified, it retains the power to transfer it's magic to you, but not it's corruption.  While you may still see physical changes or effects upon consuming a purified meal, drink, or potion, it will be free of the corrupting influence of this land."<br/><br/>He raises his eyebrows, "Succubus milk you say?  That's a powerful draught for a woman.  The effects are much like those of pinkberries, but more so... and with a much greater risk of corruption."<br/><br/>He smiles, "I hope I'm explaining this well enough."