Taste the authentic robata grill in London: binchotan‑fired dishes at Aki Marylebone

You know when a meal is technically perfect, but it doesn’t quite haunt you afterwards?

The fish was pristine. The seasoning was correct. The service was smooth. And yet, no spark. No heat with meaning. No sense that the kitchen was doing something ancient and quietly obsessive.

That missing element often comes down to one thing: the grill. Not a grill in the generic sense. A robata grill, Japan’s fireside cooking tradition, engineered for precision, patience, and the kind of caramelisation that makes you pause mid-sentence.

At Aki, robata is not the entire menu. It is the addition that changes how you order the rest of it, especially if you are the kind of person who takes Japanese food seriously.

What is a robata grill? The binchotan-fired difference

Robata is short for robatayaki, fireside cooking, historically performed around an open hearth in the fishing communities of Hokkaido, Japan’s northernmost island, where fishermen cooked their catch directly over hot coals at the end of a working day. The word translates loosely as “beside the fire,” and the spirit of it, communal, unhurried, ingredient-led, has never really left the technique.

What separates serious robata charcoal cooking from everything else is binchotan: a dense Japanese oak charcoal that burns at temperatures approaching 1,000°C, produces almost no smoke, and delivers a clean, mineral heat that has nothing in common with standard charcoal. There is no acrid aftertaste. No soot. Just a controlled, radiant intensity that caramelises the outside of a dish while leaving the interior soft and precise. It is what makes the black cod lacquer properly. It is what gives the grilled meat its edge without overwhelming it. It is what your taste buds are actually responding to when a robata dish lands and you cannot quite explain why it is better.

Most Japanese restaurants in the United Kingdom claim robata on the menu. Very few invest in the authentic setup, the right charcoal, the right grill depth, the right distance between heat and ingredient. The difference is not subtle.

Why Aki’s robata grill is London’s classiest option

London’s robata scene has grown significantly. From Old Compton Street in Soho to Covent Garden and beyond, Japanese grilling has found its place in the city’s food culture. But the presence of a true robata grill is what separates the serious Japanese restaurant from the one that simply borrows the vocabulary.

At Aki, the approach is simple: robata as part of a bigger, more refined evening. You are not coming to a loud, single-note grill room that peaks at the fire and has nothing else to say. You are coming to a premium Japanese restaurant in Marylebone where the robata dishes sit alongside a sushi bar, delicate raw dishes, sashimi, and small plates, and where chefs treat every section of the menu with the same exacting attention.

This is the difference: the robata grill here is not a theme. It is an extra dimension. For Japanese food lovers, it means you can build a meal that moves, clean to rich, bright to smoky, delicate to decadent, without ever leaving the Aki world.

Robata dishes worth ordering (in the right order)

If you want the robata section to do its job properly, treat it like a tasting menu sequence, not a scattergun list. Start clean, then let the heat build.

ASPARAGUS: brown butter hazelnut miso, yuzu sesame.
This is where you begin when you want proof that the grill can do elegance. Char at the edges, snap in the centre, a miso that reads as nutty depth rather than sweetness.

TENDER STEM BROCCOLI: satsuma yuzu wafu dressing, wasabi furikake.
The counterpoint. Bright, lifted, slightly sharp. The kind of dish that keeps the rest of your order honest.

BONELESS CHICKEN WINGS: garlic prawn, tomato natto miso, furikake.
This is not wings. It is a study in savoury depth: the fermented edge of natto miso, the sea-sweetness of prawn, the robata skewers format doing what frying cannot, structure without heaviness.

CHICKEN AND SPRING ONION YAKITORI: shiso, matcha salt, oak barrow aged soya tare.
A classic skewer shape, finished with the kind of precision that makes you understand why people become obsessed with Japanese grilling in the first place.

LUMINA LAMB CUTLETS: yuzu natto shiso fermented kimchi marinade.
This is where the red chilli heat and fermented depth enter the sequence. Grilled meat at its most considered, bold without being blunt, the kind of plate that earns a pause.

CARAMELISED BLACK COD: shio koji den miso, nuka cucumber, Japanese herbs, yuzu dashi.
The robata grill’s best argument. Lacquered surface, soft interior, savoury depth that stays clean. It tastes expensive in the way that has nothing to do with price and everything to do with control.

BLACK GINGER BABY CHICKEN: aged barley miso, onsen egg, fresh truffle, Japanese herbs.
It sits right on the line between comfort and theatre. The miso brings bass notes, the truffle deepens them, and the onsen egg delivers that soft, glossy finish you did not know you needed.

Robata, but make it a full Aki evening

The best part about robata at Aki is that it plays well with others. You are not trapped in a grill-only storyline where you leave smelling like a bonfire and regretting your jacket.

The clever move is using the robata section as the heat line running through a broader, more civilised meal. It works just as well for a business lunch where you need to look like you know exactly what you are doing (order the black cod, close the deal) as it does for a dinner that needs to impress without trying too hard.

Start with fresh sushi because you are a purist. Move through the sushi bar for a sushi roll or two. Then pivot to the robata lamb because you are human. Finish with a cocktail downstairs in our newly opened Kiyori Lounge because the night is young and your standards are high.

That is what makes Aki the smarter option among central London Japanese restaurants: the grill is exceptional, but it is secure enough not to demand it be your entire personality.

What to drink with robata: sake, wine & Kiyori cocktails

Robata asks for a proper pairing, and this is the conversation most guests skip at their own expense.

Sake is the natural start. A rich junmai or aged kimoto sake mirrors the umami depth of miso-lacquered dishes without competing with them. Three or four sakes across a robata sequence is not excess, it is sequencing. Japanese beer works as the accessible counterpoint, clean, lightly bitter, a palate reset between the more complex dishes. Keep a cold Sapporo or Asahi within reach and your taste buds will thank you for it.

For guests who want to explore the full drink range, the wine list at Aki is a serious proposition. The layered, spiced yellow peach profile of the Vincent Girardin Meursault Vieilles Vignes is the correct answer for the black cod and the lobster. The supple, concentrated character of the Justin Girardin Santenay 1er Cru Pinot Noir finds its match in the yakitori and the lamb cutlets. Aki’s full wine selection is as considered as everything else here, and the robata is the perfect excuse to explore it properly.

For Japanese food lovers, a true robata grill marks the difference

If you are the kind of person who judges a Japanese restaurant by the details, the temperature, the timing, the way heat is used like punctuation, robata is not a trend. It is a tell. It tells you whether the kitchen understands restraint, whether it trusts ingredients, whether it can deliver power without noise.

The bustle of central London has no shortage of places claiming a Japanese dining experience. But a genuinely memorable dining experience, one built around the discipline of charcoal cooking and the intelligence of a full modern Japanese menu, is rarer than it should be.

Aki is in Marylebone, a short walk from Regent Street and Cavendish Square, close enough to the West End to be genuinely convenient, far enough from the crowds of Covent Garden to feel like a considered choice rather than a default. Whether you are planning a long lunch, a group dinner, or an unforgettable dining experience for a special occasion, the robata grill is where the evening finds its edge.