This friendly shop has been serving simple fugu (pufferfish) since 1958. Sit on hori-kotatsu seating and sample sashimi, karaage (fried fugu) and hirezake (sake boiled with a grilled fugu fin). Reservations are required, at least a day ahead. It's behind the old-style grey-and-white lattice front.
Fugu Matsu
Beppu