Kawaramachi Izumiya

Founded in 1887, Kawaramachi Izumiya is a rare restaurant where you can try narezushi—a traditional type of fermented sushi made with sweetfish (ayu). This delicacy is prepared through a meticulous process: the fish is salted for six months, then fermented in rice for another six months, resulting in a deeply flavorful, lactic acid–fermented dish known as the ultimate in aged sushi. Reservations are prioritized, so it's best to contact the restaurant in advance to ensure a smooth visit.