Japanese Sanma Pacific Saury Autumn Flame-Grilled Shioyaki

Japan — sanma (Pacific saury, Cololabis saira) as the definitive autumn fish; October as peak season

Sanma (サンマ, Pacific saury) is Japan's most beloved autumn fish and the single ingredient most associated with the September–October season. The arrival of sanma is one of the most culturally anticipated seasonal food events in Japan — restaurants advertise fresh sanma; families buy it from fishmongers; the news media covers the annual first haul; and poets have written of sanma's aroma rising from evening charcoal grills across residential neighbourhoods. The fish: Pacific saury is a torpedo-shaped, iridescent blue-green coastal migratory fish, 25–35cm in length, with a distinctive beak-like jaw and very high fat content during autumn migration — this fat (reaching 20–25% body weight in peak autumn specimens) makes it extraordinary for simple grilling and accounts for its rich, complex flavour. Shioyaki (salt-grilled) is the canonical preparation: the whole fish is lightly salted (or heavily salted on tail and fins for decorative crust), impaled on a skewer through the head and tail to maintain shape, and grilled over charcoal or high flame until the skin is charred and crisp and the fat within has rendered and caramelised. The head and tail turn black (this is correct and desired); the skin between is blistered and crisp; the flesh beneath is unctuous with rendered fat. Service: with grated daikon (daikon oroshi), the essential garnish whose cool, clean pungency cuts through the intense fat; a slice of sudachi or lemon; soy sauce is optional but often present. The bitter innards (kimo — the liver and stomach contents of sanma eating the sea) are considered a delicacy.

Peak-season sanma at the charcoal grill: the skin crackles and spits with rendered fat that burns with a fragrant sizzle; the flesh beneath is rich and golden with fat; the bitterness of the innards adds complexity that elevates the whole; the daikon oroshi arrives cool and clean on the side, providing relief between bites; the combined experience is autumn in Japan distilled to a single plate