Yuzu (Citrus junos, from Japanese 柚子 or ユズ) is a citrus fruit and plant in the family Rutaceae of East Asian origin. Yuzu has been cultivated mainly in East Asia, though recently also in Australia, Spain, Italy and France. It is believed to have originated in central China as a hybrid of mandarin orange and the ichang papeda. The yuzu is called yuja (from Korean 유자) in Korean cuisine. Both Japanese yuzu and Korean yuja are borrowings of the kanji/hanja yòuzi (柚子), though this Chinese word now refers to the pomelo.