Nagatoro Ayu-no-Sato

Nagatoro Ayu-no-Sato is a seasonal riverside grill stall at Nagatoro serving ayu, a sweetfish caught directly from the Arakawa River as it cuts through the Nagatoro gorge, one of the Chichibu region's signature scenic sights. The fish is salted and skewer-roasted over charcoal in the shioyaki style, a simple preparation that lets the ayu's delicate, slightly sweet flavor come through, whole, head to tail, and eaten off the skewer. Alongside the classic shioyaki ayu, the stall serves an ayu rice bowl for a more substantial meal and a river fish tempura set featuring other small fish drawn from the same waters. The setting is entirely outdoors, with the stall positioned along the riverside path near the gorge, close to Nagatoro's suspension bridge and the rafting boats that launch nearby, giving diners a view of the river's distinctive columnar-jointed rock formations while they eat. Because ayu is a river fish tied to a specific fishing season, the stall operates only from April through October, closing outside the warmer months when fresh ayu is unavailable. There is no reservation system -- it is an outdoor, walk-up grill stall -- and the best experience comes from timing a visit with a Nagatoro river gorge walk or a rafting trip, treating the ayu as a mid-excursion meal rather than a standalone destination.