Bu (hangul: 부; hanja: 缶) is a clay pot beaten with a bamboo whisk and used in Korean Confucian court and ritual music; derived from the Chinese fǒu.
In Popular Culture Bu was referenced in "The Silent Treatment", Season 3 Episode 1 of The Suite Life On Deck. When Cody, Woody, and Zack are stuck making pottery in the monastery, Cody makes a Bu. He describes it as "a Korean percussion instrument used in Confucian ritual music."