The Sumo mandarin. is a large, imposing, and clearly charming mandarin. Distinguished by its topknot—just like the Chonmage hairstyle of Japanese sumo wrestlers—it genuinely suits its name. And as with the martial art of sumo, it evokes the art of balance—a large, rough exterior, but tender fruit within. The developers of the Sumo mandarin took their time refining this succulent fruit—30 years, in fact. They were looking for a challenger to the classic top-ranking satsuma. Imported from Kumamoto Prefecture in Japan, the Sumo is adapted to grow and ripen in the California Central Valley. It’s certainly a rising star in the mandarin arena and one to watch. In Japan, where the Sumo mandarin is called Dekopon, it is prized as a fruit for gift-giving.