If you’ve watched Arang and the Magistrate, you might remember how excited Arang was to eat peaches once she came back to life. I didn’t know this but in Korean (also Chinese and Japanese, I think) mythology/culture, peaches are thought to have special supernatural properties: They keep ghosts away!
There are a lot of different variations on how and why this story came about, but the general consensus seems to be that peaches symbolize the warmth and vitality of springtime; hence, they repel ghosts which prefer just the opposite. In fact, one of the ways to exorcise a person thought to be possessed by a spirit is by whacking him with the branch of a peach tree! The superstition carries so deeply that people don’t serve peaches during 제사, because it scares off ancestral spirits.
Moreover, peaches are considered divine fruits, consumed by the King of Heaven and other immortals to keep them ageless. They are thought to be a potent ingredient for elixirs and charms for eternal youth, good health, and warding off demons. Supposedly people used to make everything from bows and arrows to clubs from the wood of peach trees, believing that their weapons too would possess the special powers of the tree from which it was carved.
There are tons more interesting folktales out there about peaches and their “special powers.” Check them out if you have time! Personally, I wouldn’t mind some peach cobbler right about now. *sob*