Why Are Japan's Best Kitchen Knives Made in Sakai?

Start with the strangest thing on Sakai's skyline: a keyhole-shaped forested mound 525 metres long, ringed by moats — the Daisen Kofun, said to be the resting place of Emperor Nintoku. It is one of the largest burial mounds ever built anywhere, raised in the mid-5th century over roughly two decades, and since 2019 part of the UNESCO-listed Mozu-Furuichi kofun group.

What does a tomb have to do with knives? Iron. Building on this scale consumed tools — and ironworking in 5th-century Sakai is archaeologically documented: forge remains, slag and whetstones have been excavated at settlement sites near the Mozu mounds, and nearby kofun burials held hundreds of iron swords and armour pieces. The story that smiths were summoned from across Japan to build Nintoku's tomb and then settled here is the craft's own origin tradition — the industry tells it about itself, and archaeology neither confirms nor refutes it. What archaeology does confirm is simpler and better: people were forging iron in Sakai fifteen centuries ago, and they never really stopped.

Fast-forward seven hundred years. As Japan's warrior class rose, ironworking across the country tilted toward the sword, and Sakai's smiths went with it — Japanese-language sources place Sakai's succession into sword-era forging in the late Heian period. One honest caveat the sword world will hold us to: the classical canon of Japanese sword schools (the gokaden) contains no named Sakai school. Sakai's sword story is an industrial lineage — furnaces, steel, skilled hands — rather than a celebrated smithing dynasty, and that industrial character is exactly what let it pivot so easily in every later era.

This is also where the blade itself changed. Quench a laminated blade edge-down in water — yaki-ire (焼き入れ) — and the differential cooling hardens the edge and pulls the body into a curve. The technique that made the katana's profile is the same family of hardening that gives a Sakai single-bevel knife its edge today.

By the 15th century Sakai wasn't just a forge town — by the 1530s it numbered some 40,000 people across ten districts, and it governed itself. A council of merchant elders, the egōshū (会合衆), ran the city; the earliest concrete record of them dates to 1484. In 1561 the Jesuit missionary Gaspar Vilela wrote that Sakai was governed by its magistrates like Venice — the origin of the "Venice of Japan" line every guidebook borrows.

Then, in 1543, Portuguese traders reached Tanegashima carrying matchlock firearms. Within years Sakai had reverse-engineered them and become one of Japan's leading gun-making centres — precision forge-welded barrels, produced at scale. Guns brought trade; trade brought tobacco; and tobacco brought the knife that changes this whole story: the tabako-bōchō (たばこ包丁), a specialised blade for shredding tobacco leaf thread-fine.

Dating honesty: the guild tradition says Sakai's tobacco-knife forging began in the Tenshō era (1573–92). But documented tobacco cultivation in Japan begins later — seeds around 1601, first recorded planting around 1605 — and the earliest surviving physical evidence of the trade is an 1834 stone lantern dedicated by Sakai's tobacco-knife smiths. The tradition and the tobacco chronology don't quite line up, so we present all three dates rather than pick a winner.

The free city didn't survive the age of unification: Sakai submitted to Nobunaga's levy in the late 1560s, and under Hideyoshi its moat was filled and its autonomy ended. The merchants' city became a craftsmen's city — and the craftsmen were about to have their best two centuries.

Peace killed the sword market long before any law did. In the Genroku era (1688–1704), Sakai's records attribute the birth of the deba and usuba to the smithing lineage of Yamanoue Monju Shirō — and by the era's end, in the words of Sakai's own city library, today's Japanese knife types had "nearly all appeared." The single-bevel Sakai style — one hard edge, one hollow back, sharpened for pull-cuts through fish and vegetables — dates from here. When you buy a deba today, you're buying a Genroku-era idea.

The kiwame seal (堺極) — brand protection, Edo style

Sakai's tobacco knives were good enough to counterfeit, so the shogunate authorised a stamped mark: 堺極 — Sakai-kiwame, "Sakai, of the highest grade." Administered through the Sakai magistrate's office, the seal certified origin and quality, and production was restricted to seven named towns within the city. It was, in modern terms, a government-backed trademark and quality gate rolled into one — brand protection, Edo style.

About the year: popular retellings date the kiwame grant anywhere from 1603 to 1761. No authoritative source gives a year — not the city, not the craft federation, not the national craft registry — so we don't either. The seal's nature is documented; its birthday is folklore.

One blade, three trades

Edo-era Sakai also settled the production model that still defines it: division of labour. The forger (鍛冶) shapes and hardens the blade; the sharpener (研ぎ) grinds and finishes it through many whetstone stages; the handle-maker (柄付け) fits the wa-handle; and wholesale houses (問屋, ton'ya) coordinate and sell the result. A Sakai knife has always been a team's work, which is why the maker's name on a Sakai blade is often a brand assembled from several masters' hands — a point worth remembering when you shop.

The blades themselves are mostly awase (合わせ) construction: a hard cutting steel forge-welded to soft iron. Polish that lamination and the soft cladding takes a misty finish against the bright edge steel — kasumi (霞), "haze," the quiet signature of a traditionally made Sakai knife.

On 28 March 1876 the Meiji government issued the Haitōrei, banning the public wearing of swords (not their possession). The popular story says Sakai's swordsmiths then pivoted to kitchen knives. The record says something more interesting: Sakai had already been making kitchen knives for nearly two centuries when the ban landed. Meiji-era Sakai ran gun forges, farm-tool forges and knife forges side by side; the ban was an accelerant that tilted the town decisively toward the hōchō, not the origin of it. By 1877 Sakai knives were on display at Japan's first National Industrial Exposition.

And the gunsmiths? Their precision metalwork found new outlets — including, famously, the bicycle. In 1921, in a small Sakai workshop, the company that became Shimano was founded; the town's gun-forged habit of precision found its way onto much of the world's bicycles. Same town, same instinct: when the product dies, keep the forge and change the product.

One more Meiji-era arrival: as Western food spread through Japan, the double-bevel gyuto (牛刀, "beef sword") emerged — a Japanese reading of the European chef's knife, forged on Japanese steel. It is the knife most of the world now means by "a Japanese chef's knife," and Sakai's workshops forge some of the finest.

Sakai uchihamono (堺打刃物) was designated a national Traditional Craft by the Japanese government on 5 March 1982, and registered as a regional collective trademark in 2007. The Edo division of labour survives intact — the craft federation today spans wholesale houses, forging workshops and sharpening workshops operating exactly as the ton'ya system always did. And Sakai blades still equip the vast majority of Japan's professional Japanese-cuisine kitchens — a dominance you can taste in any serious sushi-ya.

It's also a craft carried by strikingly few people: the city's blade artisans number on the order of a hundred, with the forging smiths far fewer — a genuine succession challenge the industry is open about. That scarcity is part of what you hold when you own a Sakai knife: not a factory output, but the continuation of a 1,600-year habit by a small number of working masters. You can visit them — the Sakai Traditional Crafts Museum (堺伝匠館, renewed 2022) runs demonstrations and holds the definitive collection, minutes from working forges.

If you want to see the Sakai system working today, look at Sakai Takayuki — the trade name of Aoki Hamono, founded in May 1947 by Aoki Ichirō and named for the founder's son. Aoki Hamono is a classic Sakai ton'ya grown global: a wholesale house holding dual guild membership as wholesaler and maker, coordinating independent forgers and sharpeners under one brand now sold in dozens of countries. Craftsmen who forge and sharpen for Sakai Takayuki include nationally honoured masters — Togashi Kenji (awarded the 瑞宝単光章 Medal of Honour, 2022), Yamazuka Mitsuo (named なにわの名工, "Master Craftsman of Naniwa," 2023) and Doi Keijirō — the modern faces of the Edo division of labour.

Where we stand: Knives & Stones is a Sakai Takayuki dealer. The closing chapter of the video isn't AI — it's our own visit to Sakai Takayuki and the Aoki Hamono workshops, filmed where these knives are actually made. We sell this history because we've stood in it.