Japanese Seafood Beyond Sushi: The Incredible World of Fish Culture
By Yoshi | Japan Unveiled
Japan consumes more seafood per capita than almost any other country on earth. The specific figure varies by year and by measurement methodology, but the general reality is consistent: Japan is a seafood nation in a way that no inland country can fully appreciate and that even other maritime nations have not quite replicated.
The international image of Japanese seafood is, understandably, dominated by sushi and sashimi. These are the forms of Japanese seafood preparation that have achieved global spread, that have been adapted and reproduced in restaurants across every continent, and that have become the primary lens through which the world encounters the Japanese relationship with fish and shellfish.
But sushi and sashimi are two preparations among dozens. They are the forms that travel well, that can be understood without cultural context, that are accessible to someone encountering Japanese seafood for the first time. They are not the forms that reveal the depth and the specific character of Japanese seafood culture.
I want to tell you about the forms that do.
The Philosophy: Why Japan Treats Fish This Way
The Japanese relationship with fish begins with geography and develops into philosophy.
Japan is a archipelago nation — 6,852 islands, with the majority of the population living within relatively short distance of the coast. The specific geography of the Japanese coast — the complex currents where warm southern water meets cold northern water, the specific depth profiles that create diverse marine habitats, the specific tidal patterns that produce exceptional shellfish conditions — creates one of the most diverse and most productive fisheries in the world.
The historical dependence on this fishery — the centuries during which Buddhist dietary restrictions on meat consumption made fish the primary animal protein for most of the population — produced a specific Japanese culinary orientation toward fish that is fundamentally different from most Western culinary traditions. Fish in the Japanese tradition is not a secondary protein — a Friday meal or a health-conscious alternative to meat. Fish is the primary, the central, the most carefully developed subject of the culinary tradition.
This primary status has driven the development of specific techniques for preparing fish in ways that Western culinary traditions — in which fish is typically either a simple grilled or fried preparation or a luxury item treated with elaborate saucing — have not needed to develop.
Shioyaki: Salt-Grilled Fish — Simplicity as Mastery
Shioyaki (塩焼き) — salt-grilled fish — is the preparation that most completely expresses the Japanese understanding of fish at its simplest and most direct.
The technique: a whole fish or a fish fillet is salted — either with a rubbing of coarse salt applied and left to draw moisture for a period before cooking, or with a more aggressive pre-salting that seasons the fish more deeply — and then grilled over charcoal or under a broiler until the skin is crisp and the flesh is just cooked through.
That is the entirety of the technique. No marinade. No sauce. No complex seasoning. Salt, fish, heat.
The result, when the fish is of good quality and the technique is correctly applied, is one of the most satisfying fish preparations imaginable. The specific flavour of a well-made shioyaki — the crisp, slightly charred skin whose fat has rendered during the grilling, the specific mineral quality of the salt enhancing rather than covering the fish’s own flavour, the flesh that is just past translucent — is the flavour of fish at its most essential.
The specific fish most commonly prepared as shioyaki:
Sanma (秋刀魚, Pacific saury) — the fish most associated with autumn in Japanese food culture. Sanma has a specific richness — a higher fat content in autumn when it has been feeding extensively in preparation for winter — that makes it ideal for the shioyaki preparation. The specific smell of sanma shioyaki — the combination of charcoal and the specific aroma of the fish’s fat rendering — is one of the most evocative seasonal food smells in Japan.
Ayu (鮎, sweetfish) — a freshwater fish associated specifically with summer, when it is at its peak quality in the clear mountain rivers of central Japan. Ayu is typically grilled whole on skewers, and the specific practice of kushi-uchi (skewering the fish in a specific wave pattern to suggest the fish swimming in the current) is one of the more visually specific Japanese food preparations. Ayu has a specific watermelon-adjacent aroma when fresh — a delicate, slightly sweet quality that has led to its name (ayu is related to the word for “sweetfish”) — that the shioyaki preparation expresses completely.
Shishamo (柳葉魚) — the small smelt-like fish that appears in izakaya menus throughout Japan, typically grilled whole and eaten entirely including the head. Female shishamo filled with visible eggs are prized for the specific textural contrast of the flesh and the roe.
Nimono: The Art of Simmered Fish
Nimono (煮物) — simmered preparations — represent the most complex category of Japanese fish cooking in terms of flavour development. Where shioyaki relies on the fish’s inherent flavour amplified by salt and heat, nimono develops flavour through the interaction of the fish with a simmering liquid over time.
The standard nimono cooking liquid — nitsuke — is a combination of dashi, soy sauce, sake, mirin, and sugar in proportions that vary by dish and by region. The fish is simmered in this liquid until it is cooked through and until the liquid has reduced to a glaze that coats the fish and provides a layer of concentrated, sweet-savoury flavour.
Saba no misoni (鯖の味噌煮) — mackerel simmered with miso — is one of the most beloved home cooking preparations in Japan, the fish dish that appears most consistently on the Japanese domestic table. The combination of the strongly flavoured blue-backed mackerel and the depth of miso produces a preparation that is simultaneously simple and deeply satisfying. The miso’s glutamate, the soy sauce’s umami, and the sake’s aromatic qualities interact with the mackerel’s specific oily richness to produce a sauce of considerable complexity.
Karei no nitsuke (鰈の煮付け) — flatfish (typically flounder or turbot) simmered in the standard nitsuke liquid. Karei no nitsuke is the classic nimono fish preparation — the simple simmered white fish in a reduced sweet-soy sauce that appears at Japanese home tables and at casual restaurants as one of the most reliably satisfying preparations in the Japanese culinary repertoire.
Himono: The Preserved Dimension
Himono (干物) — dried fish — represents one of the most specifically Japanese approaches to seafood preservation and is, for the Japanese morning meal, as fundamental as bread is to a Western breakfast.
The technique: fish is split open or filleted, marinated in salt (and sometimes mirin — for mirin-boshi, the sweeter dried fish variety), and dried in the open air or in controlled drying conditions for a period ranging from hours to days. The drying process concentrates the fish’s flavour and modifies its texture — the moisture loss during drying produces a specific firmer, more intense version of the fish that is substantially different from fresh fish in its eating qualities.
The most celebrated himono come from specific regions with specific traditional drying practices:
Ōhara-no-himono — the dried fish of the fishing town of Ōhara near Kyushu, dried in the specific coastal winds and salt air of the area.
Numazu-no-himono — the dried fish of Numazu in Shizuoka Prefecture, one of the most famous himono-producing areas in Japan, where the specific quality of the Suruga Bay fish combined with the specific mountain wind from the direction of Mt. Fuji (arashi) produces himono of celebrated quality.
The most common himono fish: aji (horse mackerel), saba (mackerel), hokke (Atka mackerel, particularly popular in Hokkaido), hatahata (sandfish, a specialty of Akita Prefecture), and various other species depending on the region and season.
Himono is typically grilled directly from its preserved state — no additional preparation required — and served as part of the Japanese breakfast set alongside rice, miso soup, and pickles. The specific eating experience of a well-made himono — the concentrated, intense flavour that the drying has produced, the specific texture that is firmer than fresh fish but still yielding in the centre — is one of the most essential Japanese breakfast pleasures.
Kaisen-don: Seafood Rice Bowls Beyond Chirashi
Kaisen-don (海鮮丼) — seafood rice bowl — is the most accessible everyday form of Japanese seafood eating, and its regional variations reveal the specific character of Japan’s various fisheries.
The basic format: a bowl of warm shari (seasoned sushi rice) or plain steamed rice topped with an assortment of fresh seafood — typically a combination of sashimi-grade fish and shellfish — dressed lightly with soy sauce.
The regional variations:
Hokkaido kaisen-don — the Northern island’s specific fisheries produce the ingredients most associated with Hokkaido seafood: sea urchin (uni) from the cold northern waters, salmon roe (ikura), scallops (hotate) from the Hokkaido coast, Hokkaido crab, and various other cold-water seafood. The specific richness and the specific oceanic intensity of Hokkaido seafood is different from the more delicate flavours of the warmer southern fisheries.
The Tsukiji connection — the former Tsukiji market (now Toyosu) in Tokyo is the largest seafood wholesale market in the world, and the surrounding area has historically been one of the best places in Japan to eat extremely fresh seafood in the morning. The breakfast kaisendon and maguro-don (tuna rice bowl) available near the market are among the most celebrated in Japan.
The Specific Japanese Sensibility: Freshness Above All
I want to name what I think is the most important difference between Japanese seafood culture and most other seafood cultures: the absolute priority of freshness.
In most Western culinary traditions, seafood freshness is important but is understood to be addressed through cooking — heat kills bacteria, properly cooked fish is safe regardless of how fresh it was before cooking. The specific quality of the fish’s flavour at different stages of freshness is acknowledged but is not the primary organising principle of the cuisine.
In Japanese seafood culture, freshness is everything — not because of food safety concerns (though these are real and taken seriously) but because the specific flavour qualities of extremely fresh fish are so superior to the qualities of fish that has been handled, stored, or transported for any significant period that using anything less than the freshest available fish is understood as a fundamental compromise.
The specific concepts: ikijime (活け締め) — the specific killing technique that minimises the fish’s physical distress and preserves the specific enzyme chemistry that determines the flavour of fresh fish; katsuo-ichi (活魚) — live fish, transported alive to the restaurant and killed immediately before preparation; the specific grading of fish by freshness at the wholesale market level, with premium prices for the freshest fish of each species.
These concepts reflect a culinary culture that has spent centuries refining its understanding of what makes fish taste the way it tastes, and developing the specific handling practices that preserve the best qualities of the fresh fish from the ocean to the plate.
The sashimi that tastes transcendent at a serious Japanese restaurant is not transcendent because of the chef’s skill alone — it is transcendent because the fish was alive hours ago, handled correctly at every stage, and prepared with the specific knife technique that minimises cell damage. Everything in the chain matters.
— Yoshi 🐟 Central Japan, 2026
Enjoyed this? You might also like: “Sushi vs. Sashimi — What’s the Actual Difference?” and “The Japanese Diet: Why Japanese People Live So Long” — both available on Japan Unveiled.
