kabosu

Kabosu (カボス or 臭橙; binomial name: Citrus sphaerocarpa) is a citrus fruit of an evergreen broad-leaf tree in the family Rutaceae. It is popular in Japan, especially Ōita Prefecture, where its juice is used to improve the taste of many dishes, especially cooked fish, sashimi, and hot pot dishes.

==Characteristics== thumb|right|150px|Cross-section of a kabosu, with two whole ones for comparison Kabosu is a citrus fruit closely related to yuzu. Its juice has the sharpness of lemon, and it is used instead of vinegar in some Japanese dishes. It grows on a flowering tree with sharp thorns. The fruit is harvested when still green, but if left to ripen it turns yellow. It is often confused with similar citrus such as sudachi, but can easily be distinguished by the apex of the fruit where the pistil has fallen off, which is a slightly raised torus shape.