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The tuna kings: Toyosu's top three suppliers

Behind every piece of toro you’ve loved is a name you’ll never see on the menu: the tuna dealer who bought it. At Toyosu — Tokyo’s wholesale market, heir to Tsukiji — a small caste of intermediate wholesalers (nakaoroshi) holds extraordinary power. They buy the best bluefin at the dawn auction and decide which sushi chef is allowed to serve it. A chef’s tuna is, to a surprising degree, his dealer’s judgment. Three names sit at the top.

How the tuna actually reaches you

Whole bluefin arrive at Toyosu and are sold by auction to the nakaoroshi who line the market’s stalls. The chef doesn’t bid; he buys from a dealer he trusts — and the great ones don’t just sell fish, they select it, break it down, age it, and match it to the chef. The best of them turn buyers away: an allocation from a top tuna merchant is itself a mark of status. When a chef sets a small wooden placard on the counter naming his supplier, that is what he’s quietly telling you.

1. Yamayuki (やま幸) — the king

No name carries more weight. Yukitaka Yamaguchi, who built the Yamayuki group with his father, is so revered he’s known as the “God of Tuna.” His selections are the darling of Japan’s greatest counters — Sushi Saito among them — and his fish is so coveted that even established chefs struggle to secure an allocation.

What sets him apart is matchmaking: he’ll send a softer, subtler tuna to a counter with warm, gentle rice and a firmer, leaner cut to another, fitting the fish to the chef. He’s also a fixture at the New Year’s first auction, paying hundreds of millions of yen for the season’s opening bluefin. If you’ve eaten great toro in Tokyo lately, the odds are it passed through his hands.

The Yamayuki stall at Toyosu market, sign reading Yamayuki, with workers in aprons among stacks of styrofoam boxes
The Yamayuki (株式会社やま幸) stall at Toyosu, where the day's tuna is sorted and sold on to the chefs lucky enough to have an allocation.
Yamayuki origin placards in a glass case, naming bluefin from Fukushima and Yamaguchi
Yamayuki (やま幸) placards, each naming a fish's origin — longline bluefin from Nakanosaku in Fukushima, fixed-net from Senzaki in Yamaguchi.
A bowl of Yamayuki tuna over rice, akami slices with a mound of minced toro and scallion
You can eat Yamayuki's tuna without a counter: a bowl at Seagen, the group's own Tsukiji shop, for a fraction of restaurant prices.

2. Fujita (藤田) — Jiro’s dealer

If Yamayuki is the modern king, Fujita is the classic. This is the intermediate wholesaler made famous by Jiro Dreams of Sushi — the tuna man Jiro Ono relies on — supplying Sukiyabashi Jiro and a roster of other elite counters. The film caught the relationship exactly: the chef is only as good as his fish, and the fish is the dealer’s call.

3. Ishiji (石司) — the most selective

With some eighty years of history, Ishiji has a reputation as the most selective tuna house at Toyosu — a dealer that buys little and rejects much, and supplies classic Edomae institutions like Hatsunezushi and Tenzushi. Where Yamayuki is everywhere at the top end, Ishiji is the quieter connoisseur’s choice. It also runs a small outlet near Monzen-nakachō called Tsubasa (つばさ), where you can eat its natural bluefin in set meals at retail prices.

A bluefin set meal at Tsubasa — sashimi of akami and chutoro with tamago, rice, miso soup and pickles
A bluefin set at Tsubasa (つばさ), Ishiji's small shop near Monzen-nakachō — natural hon-maguro at retail prices.

(A fourth house, Hichō (樋長), rounds out the market’s “big four” — but the three above are the names whose placards you’ll see most often at a serious counter.)

Why it’s worth knowing

It’s a useful piece of literacy. When you spot “やま幸” or another dealer’s name on the counter, the chef is naming the source of his single most important ingredient — and, just as quietly, telling you he’s good enough to be sold to. A fish has a 名産地 (see meisanchi); it also has a merchant, and at this level the merchant matters almost as much as the sea. (For everything about the fish itself, see the tuna guide.)