Rethinking Tokyo's
hamburg steaks, plate by plate.

That last clause carries the weight. Rice is not a side dish here; it is the condition the cooking was designed around. The food historian Tetsu Okada proposed a simple line: what goes with bread is Western cooking, what goes with rice is yoshoku.

When Western dishes arrived in Japan, they were not preserved as imports. They were re-engineered around Japanese ingredients, Japanese palates, and above all around rice. Seasoning was rebalanced, portions were reshaped, and dishes were rebuilt to be eaten with a bowl of white rice rather than bread.

What emerged is a cuisine of its own. Curry rice, omurice, croquettes, gratin, and hambāgu are not foreign food in Japan — they are Japanese food, cooked at home, served in town restaurants, and refined in long-established restaurants and hotels.

Travellers often picture Japanese people eating sushi and tempura every day. They do not. A week of ordinary meals in Japan might run through Japanese, Chinese, Italian, curry and yoshoku without anyone finding it remarkable — a range of daily eating that is unusual almost anywhere else.

Nor is sushi one thing. A conveyor-belt plate, a supermarket pack and a counter in Ginza all go by that name and are effectively different dishes. Tempura runs from a topping at a standing soba counter to a specialist’s tasting menu. Even steak follows the pattern: served with fries in one room, with a bowl of white rice in another.

Yoshoku is also unusually free in form. It works with rice or with bread, with sake or with wine or beer. It crosses from home cooking to the neighbourhood diner to the hotel dining room, and it can be eaten with chopsticks or with a knife and fork. That looseness is not vagueness — it is what allows yoshoku to keep adapting.

You scan a menu, read croquette, gratin, beef stew, hamburger steak, assume you already know what will arrive, and order something else. It is an understandable mistake, and it is the one worth avoiding.

These are not Japanese versions of European dishes. They are Japanese dishes that kept European names. A century of cooking for Japanese tables changed the ingredients, the seasoning, the texture and the way a plate is built — while the name stayed put.

Two dishes settle the argument, and they came out of the same kitchen. Doria sounds Italian; it was improvised in 1927 at the Hotel New Grand in Yokohama by the Swiss chef Saly Weil, for a guest who was unwell and asked for something easy to swallow. It exists in neither Italy, nor France, nor Weil’s native Switzerland.

Napolitan is named after Naples and is not Italian either. After the war, Weil’s student Shigetada Irie — by then the hotel’s second head chef — watched the occupying American officers eating boiled spaghetti with ketchup poured over it. He decided the idea was worth keeping and the execution was not, and rebuilt it around a proper tomato sauce. One hotel, one lineage of chefs, two Italian-sounding dishes that Italy has never served.

Those two also mark the two eras of yoshoku. Before the war the source was European — French technique above all, arriving through hotel kitchens and the ports. After 1945 a second stream came in, this time American, carried by the occupation: ketchup, spaghetti, fried chicken in a basket.

Restaurants did not hide the borrowing; they put it on the door. Center Grill, which opened in Yokohama’s Noge district in 1946 and made the ketchup version of napolitan famous, still trades under a single sign reading American-style · Center Grill · yoshoku. The old shopfront of Ginza Candle read American-style cooking. The foreign source was declared out front — and then the food was taken apart and rebuilt, exactly as the previous generation had rebuilt French cooking.

Yoshoku is roughly 150 years old. That is long enough to have its own classics, its own lineages of chefs, and its own century-old restaurants — the same depth people travel to Japan for elsewhere.

And you may have eaten yoshoku already without knowing it. Tonkatsu and Japanese curry travel well enough that both have made the list on their own — yet both are yoshoku, adapted from a European cutlet and a British-Indian stew. If those two convinced you, the rest of the category is waiting.

There is no fixed recipe. The meat itself is a decision: kuroge wagyu blended with pork, domestic beef, US beef, Australian beef. Every restaurant chooses its own blend, and the choice changes everything downstream.

So does the rest of the build — breadcrumbs, onion, egg, dairy, spices, how coarsely the meat is ground, how far it is worked, how it is cooked, and what sauce completes it. A demi-glace that has been simmered for days and a grated daikon with soy sauce are not two versions of the same dish; they are two different designs.

Hambāgu developed to be eaten with rice, and that shaped its seasoning and its sauces. But it sits just as easily with bread, and with wine, beer or sake. You will find it on a white tablecloth in a long-established yoshoku restaurant, on a cast-iron plate at a town restaurant, and on the family table at home.

That range is the point. Judging hambāgu means asking what a given kitchen is designing for, not measuring every plate against a single ideal.