They are a hybrid citrus fruit which are a cross-breed of Navel, Pomelo and Mandarin oranges. The Sumo Citrus was developed in Japan in 1972 with traditional plant-breeding techniques, but ...

Shiranui mandarins (Citrus reticulata Blanco) are delicate and don't fare well when shipped, making their appearance in the market rare. The ones you might find in the grocery are usually labeled ...