being badly influenced by(Zuke)
Pacific bluefin tuna (edible fish, Thunnus orientalis)soy sauce
Sushi ingredients marinated in soy sauce. It is believed to have originated in the days when there were no refrigerators, and raw fish such as tuna were marinated in soy sauce to preserve them. The sauce used for pickling is usually sweetened by adding mirin (sweet cooking rice wine) or sake (sake) to soy sauce over heat. Bekko-zushi, a local delicacy of Izu Oshima, and tekone-zushi of Mie Prefecture, both use ingredients prepared using the pickling method.
