Eating Through Japan's Four Seasons
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The concept of shun (旬) — the peak season of an ingredient, the brief window when it tastes best — is one of the organizing principles of Japanese cooking. At the high end, kaiseki restaurants change their menus weekly to track what is at its best. At the everyday level, the fishmonger’s selection shifts monthly, the supermarket adds seasonal items without announcement, and the ramen shop introduces a cold version in June and retires it in September. Eating seasonally in Japan is not a concept or a movement; it is how the cuisine works.
This guide covers what is available and worth eating in each season, with specific items to look for and understand.
Spring (March–May)
The sakura food moment: Cherry blossoms are not just visual — they produce a specific seasonal food culture. Sakura mochi (pink rice cake wrapped in a salted cherry leaf), sakura tea (salt-pickled cherry blossoms steeped in hot water), and sakura-flavored products from every convenience store mark the two-week flowering period. The salted cherry leaf wrapped around sakura mochi is eaten whole; the contrast of salt, sweet rice cake, and floral leaf is the specific taste of early spring.
Takenoko (bamboo shoots): The most important spring vegetable — fresh bamboo shoots dug within hours of breaking ground, before bitterness develops. Available March–May. Takenoko gohan (bamboo shoot rice) and kinome ae (bamboo shoots with young sansho pepper leaf dressing) are the seasonal preparations. The difference between fresh takenoko and the canned or preserved version is dramatic.
Sansho (Japanese pepper leaf): The young leaves of the sansho pepper plant (kinome) appear in spring with a floral, citrus-numbing quality completely different from dried sansho powder. Used as a garnish on grilled fish, in miso dishes, and with bamboo shoots. Available in this fresh form only 3–4 weeks in April–May.
Shirako (fish milt): Available in late winter through early spring — the sperm sacs of cod, blowfish, or salmon. Creamy, mild, delicate. Served as a small side dish at sushi counters or in hot pot; a specific acquired taste that rewards trying once.
Ayu (sweetfish): The salt-water-to-river-migrating fish, considered the taste of Japan’s clean river systems. The spring ayu (coming in from the sea, called noborayu) are the younger fish; summer and autumn bring larger, more complex flavor. Grilled whole on a salt-coated skewer (shio-yaki) is the canonical preparation.
Summer (June–August)
Unagi (freshwater eel): Grilled eel — kabayaki style (split, skewered, grilled, sauced with sweet soy) — is the summer stamina food. The traditional date for eel eating is Doyo no Ushi no Hi (Midsummer Day of the Ox, late July), a summer solstice-adjacent custom dating to the Edo period. Unadon (eel over rice) and una-juu (eel in a lacquer box) are the standard formats. Quality varies enormously; the best eel is ordered at specialist eel restaurants, not at general Japanese restaurants.
Edamame: Summer soybeans — boiled in the pod with salt, eaten by squeezing the beans into the mouth while drinking beer. The specific summer izakaya (pub) opening move. The fresh edamame sold in bunches at farmers markets is markedly different from the frozen product; the natural sweetness is only present in very fresh beans.
Hamo (pike eel): A specifically Kyoto-Osaka summer fish — hamo is difficult to prepare because of the extreme density of tiny bones (requiring the skill of hone-kiri, the technique of cutting through the bones at 2mm intervals without breaking the skin). The result, blanched, produces a fish that fans out like a chrysanthemum (hanohamo). The labor involved is part of the aesthetic. Appears in kaiseki during Gion Matsuri season.
Kakigori (shaved ice): Japanese shaved ice is not a snow cone — the ice is machine-shaved to a very fine texture (like fresh snow rather than ice chips) and topped with natural fruit syrups, condensed milk, and seasonal additions. Summer kakigori shops queue on hot days; the Kyoto Ujikintoki style (matcha syrup, sweet red bean paste, condensed milk) is the reference standard.
Corn: Japanese sweet corn is extraordinarily sweet — a variety bred specifically for the fresh-eating market, sold in rows of tomorokoshi at summer festivals and roadside stalls, grilled with soy sauce and butter. Hokkaido corn is the most celebrated.
Autumn (September–November)
Matsutake mushroom: Japan’s most expensive and culturally significant mushroom — a large, firm, intensely aromatic pine mushroom that grows in red pine forests in specific mountain regions (Kyoto’s Tanba, Kyushu, parts of Hokkaido). The supply has declined drastically since the 1980s as Japanese pine forests aged and changed; domestic matsutake now costs ¥50,000–100,000 per kilogram and most available matsutake is imported from Korea, Canada, and China.
The flavor is described as “the smell of the forest” — earthy, piney, complex. The traditional preparation: dobin mushi (steamed in a small teapot with dashi broth, the broth poured into the lid-cup and drunk before the mushroom is eaten) and matsutake gohan (matsutake rice).
Sanma (Pacific saury): The long, silvery autumn fish that arrives in October. Grilled whole, salted, with grated daikon and sudachi (a small green citrus). One of the most strongly seasonal Japanese foods — its arrival signals autumn in popular consciousness. Cheap at fishmongers (¥200–300 per fish); the quality of fat in a good autumn sanma is exceptional.
Ikura (salmon roe): Autumn salmon runs bring fresh ikura to market from September. The difference between fresh ikura and the salt-cured year-round version is significant — fresh ikura has a thinner membrane and brighter flavor. Hokkaido markets carry fresh ikura in September–October; ikura gohan (roe over rice with a small amount of soy) is the domestic format.
Kuri (chestnut): Japanese chestnuts (larger and sweeter than European varieties) arrive in September. Kuri gohan (chestnut rice) is the autumn staple preparation. Kuri kinton (sweetened chestnut paste) is a wagashi sweet served with tea throughout autumn and prominently in osechi (New Year’s food).
Persimmon (kaki): The October–November fruit that signals late autumn. Two types: fuyu (firm, non-astringent, eaten like an apple) and hachiya (astringent when raw, becoming custard-soft when dried — hoshi-gaki, the dried persimmons hung in nets outside rural houses in November, are the traditional dried fruit of Japanese winter).
Autumn crab begins: The Matsuba-gani and Zuwaigani seasons open November 6 — the official first day of the San’in coast and Hokuriku coast crab season. A single high-quality crab at a coastal restaurant: ¥10,000–30,000.
Winter (December–February)
Fugu (blowfish): The fish that requires a licensed chef to prepare — the organs of certain fugu species contain tetrodotoxin, lethal if ingested. The preparation license is a multi-year certification. The resulting dish (fugu-sashi, thin-sliced raw fugu with ponzu; fugu-chiri, fugu hot pot) has a flavor that is delicate and clean rather than dramatic — the interest is partly the precision of preparation and partly the cultural weight. Kyushu (Shimonoseki is the primary market) and Osaka are the primary fugu markets. Prices: ¥3,000–20,000+ depending on format and restaurant.
Nabe (hot pot): The winter eating format — nabe (hot pot at the table, continuously added to throughout the meal). The most famous varieties: shabu-shabu (thinly sliced wagyu swished in dashi, dipped in ponzu or sesame sauce), sukiyaki (beef simmered in sweet soy broth, dipped in raw egg), yosenabe (seafood and vegetables in a lighter broth), and chanko-nabe (the sumo wrestler’s meal — chicken or fish broth with large protein portions).
Osechi ryori: The traditional New Year’s food — a lacquered box system (jubako) of small portions of symbolic foods prepared in advance for the first days of January when kitchens are ideally quiet. Each item has a meaning: black soybeans (kuromame) for health and diligence, herring roe (kazunoko) for fertility, sweet rolled egg (datemaki) for academic success. The full osechi set is prepared in the last days of December and eaten through January 3.
Shun Thinking in Practice
The menu at a serious Japanese restaurant changes seasonally not as a marketing gesture but as an expression of this framework: the best-available ingredients at this moment, prepared in the way that brings out their peak quality. Kaiseki — the formal multi-course meal — is the most explicit expression of shun, but the principle applies at every level from the sushi counter to the izakaya.
When ordering in Japan, asking “what’s in season now?” (ima no kisetsu no mono wa nani desu ka?) at any restaurant will produce a response that tells you more about Japanese food culture than any menu item. The answer is the answer.
Eating seasonally in Japan means that the country tastes different in November than it does in April. This is not metaphor — the matsutake rice, the sanma on the grill, the sakura mochi, and the fresh ikura are each only available in a window. The food is one reason the season matters, and the season is one reason the food matters.
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