A plastic box of pickled umeboshi plums umeboshi are an extremely traditional and popular japanese food highly versatile it is eaten with rice used in cuisine as a garnish shredded and eaten with chicken and seafood or used to preserve food in bento boxes japanese plums or ume are picked when still immature pickled in salt and packed with shiso leaves for their red colour great with rice and sake or shochucontains no artificial ingredients or colourings