Poisoned Oak-Matured Mead
Room of Requirement IV
Slughorn's Office, Hogwarts Castle
Draco Malfoy bewitched Madam Rosmerta into delivering this bottle of poisoned mead to Horace Slughorn, thinking he would then gift it to Albus Dumbledore for Christmas. But Draco's assassination attempt did not go as planned, as the Potions professor held onto it instead. Not knowing that it had been poisoned, Slughorn then served it to Ron Weasley in an attempt to help him recover from the effects of a powerful love potion. Thankfully, Harry Potter managed to save Ron's life by shoving a bezoar down his throat.