It's round, reddish, and a little bigger than a baseball, but think again if the only Hogwarts association you have is a Quaffle, the ball used in the wizarding world's beloved sport Quidditch. Die-hard Harry Potter fans may recognize this object as a bezoar—which means "protection from poison" in Persian, and refers to the stony mass in a ruminant animal’s stomach. Bezoars were used throughout Europe for medicinal purposes for centuries and were thought to have magical properties. In the wizarding world, bezoars were a key ingredient in the Antidote to Common Poisons. Our bezoar, pictured here, dates to 1862 and comes from the stomach of a cow.