Wadatsumi at Ikebukuro, Tokyo

A reservation-only seasonal kaiseki and natural fugu specialist in Ikebukuro, serving fresh daily Toyosu seafood.

Wadatsumi is a long-standing seasonal Japanese kaiseki restaurant in Ikebukuro, beloved for its honest prices and genuine seasonal cooking centred on the bounty of the sea. The house speciality is natural fugu, served in proper courses that showcase the delicacy of this prized fish, alongside an ever-changing line-up of sashimi and single dishes drawn from the morning run to Toyosu market. After the founding chef passed away the restaurant reopened on a reservation-only basis, with a chef who trained alongside the original owner continuing the flavours and hospitality that regulars hold dear. The menu reads like a quiet catalogue of the season: rock oysters in early summer, firefly squid in spring, whale bacon and salted mullet roe when the catch allows, plus hearty comfort dishes such as salmon or fugu zosui to close the meal. Course options include a luxurious natural-fugu course, with a la carte plates like wagyu fillet grill and assorted sashimi for those who prefer to assemble their own evening. Prices are tax-inclusive and kept approachable for the quality, a hallmark of the house since its earliest days. Tucked away on a quiet address a short walk from Ikebukuro, Wadatsumi offers an unhurried, at-home atmosphere that invites lingering over each carefully chosen ingredient. Advance booking is essential for the time being, and guests are encouraged to call ahead to reserve a table. For anyone keen to savour authentic kaiseki and fugu without the stiffness of a formal ryotei, this modest noren is well worth seeking out.