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Japanese · Osaka

Tonpei Yaki Egg Pork Omelette Osaka

Ton-pei yaki (とん平焼き) is an Osaka teppan (iron griddle) dish consisting of pork belly slices and bean sprouts stir-fried together then wrapped in a thin egg omelette and drizzled with okonomi sauce and mayonnaise. The name combines 'ton' (豚, pork) with 'pei' (from heera — thin flat pan dish in Osaka slang). It is a cousin to okonomiyaki in concept but lighter and faster: the filling is cooked first, the egg poured around it, and the whole assembly folded into a soft parcel. The egg is cooked to a tender, not-quite-set consistency — the goal is a soft, giving wrapping that yields to pressure, contrasting with the savoury pork-bean sprout filling. Tonpei yaki belongs to the izakaya and teppanyaki restaurant world rather than the dedicated okonomiyaki shop. It is an excellent example of Osaka's teppan culture — the flat iron griddle as the vehicle for quick, satisfying, intensely flavoured everyday eating. The sauce combination (sweet-savoury okonomi sauce, creamy mayo) mirrors okonomiyaki's finishing approach.

ServesFour portions
Sourced0of 7 in BC
Cook
I

The Market List

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300 g
pork belly
thin-sliced (buta bara)
Your own market
200 g
bean sprouts
Not yet stocked in British Columbia
8
eggs
lightly beaten, seasoned sparingly with salt
Your own market
2 tbsp
neutral cooking oil
Not yet stocked in British Columbia
To finish
4 tbsp
okonomi sauce
Not yet stocked in British Columbia
4 tbsp
Japanese mayonnaise
Your own market
4 g
katsuobushi
dried bonito flakes
Origin · United StatesNot yet stocked in British Columbia
II

The Method

1
Heat the teppan or a heavy non-stick pan over high heat. Add half the oil. Lay the pork belly slices flat in a single layer and sear without moving them until the fat begins to render and the underside is caramelised; turn and repeat on the second side. The pork is ready when the slices are lightly crisped at the edges and the fat is translucent.
2
Add the bean sprouts directly to the pork in the pan. Toss together over high heat for no more than one minute. The sprouts must soften slightly at their bases while retaining a distinct crunch; remove from the heat the moment they yield without becoming limp. Divide the filling into four equal portions and hold warm.
3
Wipe the pan and return it to medium heat. Add a little oil. Pour one portion of beaten egg (two eggs) into the pan and swirl to form a thin, even round. When the edges are just set but the centre remains visibly liquid and trembling — this is the moment the dish lives or dies: pull the pan from direct heat if needed and lay one portion of pork-sprout filling across the centre. The egg must be folded while it is still soft and yielding; a fully set egg cannot be recovered.
4
Fold the near edge of the egg round up and over the filling, then fold the far edge to meet it, forming a closed parcel. Slide — do not invert or flip — the parcel directly onto a warmed plate, seam-side down. The outer surface should give gently under light finger pressure; any resistance indicates the egg has over-set.
5
Drizzle okonomi sauce in lines across the surface of the parcel, then apply Japanese mayonnaise in parallel lines. Scatter katsuobushi over the top immediately before serving. In the residual heat the flakes will move; this visual animation confirms the dish is at serving temperature.
III

Quality Hierarchy

01
Reserve — Heritage-breed pork belly, hand-sliced paper-thin; freshly harvested bean sprouts from a specialist grower; eggs from a named single farm; Worcestershire-based okonomi sauce made in-house.
02
Estate — Good free-range pork belly sliced to order by a butcher; fresh market bean sprouts; good free-range eggs; a quality commercial okonomi sauce (Bull-Dog or equivalent).
03
Market — Supermarket pork belly pre-sliced for shabu-shabu or hot-pot; standard fresh bean sprouts; fresh eggs; commercial okonomi sauce and Japanese-style mayonnaise.
04
House — Any thin-sliced pork; packaged bean sprouts; eggs; a blend of Worcestershire sauce and ketchup in place of okonomi sauce; standard mayonnaise. The dish remains honest but loses depth of condiment character.
IV

Sensory Tests

◇Sight. Pork edges are caramelised and the rendered fat is translucent before the bean sprouts are added.
◇Touch. Bean sprouts yield slightly at the base but push back with a distinct crunch when pressed — they are done.
◇Sight. The egg round shows set edges and a visibly liquid, trembling centre — the correct moment to add the filling and fold.
◇Touch. The finished parcel gives gently under light finger pressure; it does not resist or spring back firmly.
◇Sight. Katsuobushi flakes animate visibly in the residual heat immediately after plating — the dish is at serving temperature.
◇Where it lives or dies. The egg must be folded while its centre is still liquid and trembling; an over-set omelette cannot be softened and the defining texture of the dish is lost.
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VI

What to Pour

The pairing
The Yamazaki 12 Year Old Single Malt
Suntory Spirits — Yamazaki Distillery · Yamazaki — Suntory Distillery
Not yet stocked in British Columbia
Whisky
From British Columbia
Fort Berens Riesling
Fort Berens Estate Winery · Lillooet
Not yet stocked in British Columbia
Wine
Without alcohol
GT's Synergy Organic Kombucha — Gingerade
Not yet stocked in British Columbia
Non-alcoholic

Why each one works is part of membership — Enter · from $49 a year →

The whole pairing
Pillar VII
Origin and lineage are part of membership.
Where the dish comes from and how it came to be — on every recipe.
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