Founded in 1869 in Nihonbashi Kodenmacho, Iseju is regarded as Tokyo's longest-running sukiyaki specialist, now in its 150th-plus year. Guests dine in fully private tatami-style rooms reached via a staircase down to the basement level, in a refined, traditional atmosphere suited to family celebrations and business entertaining. The kitchen builds every pot on four pillars: carefully selected A5-grade Kuroge Wagyu, a secret warishita sauce, charcoal-fired cooking, and hand-cutting by skilled craftsmen who trim away sinew a machine cannot. Beyond classic sukiyaki, the menu extends to suppu-ni (a lighter, kombu-dashi shabu-shabu-style pot), wagyu steak, awori-yaki (Iseju-style grilled beef), and cutlets.
