This is the fourth most often cultivated citrus in Japan by production volume. It was discovered in Hiroshima Prefecture around 1860 as a chance seedling. In botanical classification, it is a species related to Buntan. The peel is thick and the fruit is slightly hard. It has little juice, but the acidity is low, so it is easy to eat.
Monoterpene hydrocarbons such as limonene account for approximately 99% of the peel oil volatile components, while the content ratio of oxygenated components is low compared to Western citrus.