Japanese · Japan

Japanese Pork Belly Buta Bara Beyond Kakuni Preparations

Buta bara — pork belly — in Japanese cooking extends well beyond the globally recognised kakuni (braised square) form into a diverse set of preparations that reflect different regional cooking cultures, texture preferences, and fat-rendering philosophies. The key preparations: yaki-buta (grilled rolled pork belly, often called chashu when used in ramen — marinated in mirin-soy-sake and slow-roasted or braised-then-seared to a lacquered exterior while remaining juicy and soft inside); buta-shabu (thin-sliced raw pork belly swirled through hot kombu dashi, cooked in 30 seconds, served with ponzu or sesame sauce — the hot-cold temperature contrast between boiling broth and ice water dip is the authentic preparation method); butakimchi (pork belly stir-fried with kimchi — a Korean-Japanese fusion now entirely embedded in Japanese home cooking and izakaya culture); tonkatsu variations with buta bara rather than loin (producing a fattier, richer cutlet); sio ramen chashu made by braising in a lighter shoyu-mirin liquid rather than the dark tare used for soy-braised kakuni; and the Okinawan rafute (discussed in okinawan cuisine entry but the pork belly tradition there uses awamori). The chashu (char siu) form deserves particular attention: the rolled, tied, and slow-braised or oven-roasted version used in ramen and bento culture is so embedded in Japanese food culture that its Chinese Cantonese origin (char siu = fork-roasted) has been largely forgotten. Japanese chashu has diverged significantly from Cantonese char siu — far less sweet, darker soy character, and rolled rather than strip-form.

ServesFour portions (chashu roll yields approximately 8–10 ramen slices per person when serving four)

Sourced2of 14 in BC

Cook

The Market List

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For the chashu roll

800 g

pork belly

skin-on, flat slab, trimmed to an even rectangle

Your own market

60 ml

soy sauce

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60 ml

mirin

Not yet stocked in British Columbia

60 ml

sake

Not yet stocked in British Columbia

15 g

sugar

restrained — Japanese chashu is far less sweet than Cantonese char siu

Your own market

For buta-shabu

600 g

pork belly

sliced paper-thin, 1–2 mm, ideally by the butcher or part-frozen for home slicing

Your own market

1.5 l

kombu dashi

prepared cold-infusion or simmered kombu stock, kept at a rolling simmer

Not yet stocked in British Columbia

100 ml

ponzu

citrus-soy dipping sauce

Not yet stocked in British Columbia

100 ml

goma dare

sesame dipping sauce

Not yet stocked in British Columbia

1 bowl

ice water

for cooling shock after broth swirling — must be ready before cooking begins

Your own market

For butakimchi

400 g

pork belly

sliced 3–4 mm, cut into bite-sized strips

Your own market

300 g

kimchi

brought to room temperature before cooking — cold kimchi prevents proper searing

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15 g

gochujang

Japanese-style adaptation for depth and colour

Not yet stocked in British Columbia

15 ml

sesame oil

to finish

Your own market

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The Method

CHASHU — Step 1. Lay the pork belly flat, skin-side down. Roll it tightly along its length into a firm cylinder; a loose roll creates an irregular shape that cooks unevenly and produces aesthetically inconsistent ramen slices. Tie at 2 cm intervals with kitchen twine. The roll must hold its form under light hand pressure.

CHASHU — Step 2. Sear the roll in a dry heavy pan over high heat, turning to colour all surfaces. Do not skip this step: an unseared surface lacks the Maillard complexity that distinguishes premium chashu from simple braised pork. The exterior should be deep amber with no pale patches remaining.

CHASHU — Step 3. Combine soy sauce, mirin, sake, and sugar in a deep pot or oven dish. Add the seared roll. The liquid should come halfway up the cylinder; top with water if needed. Braise at a gentle simmer — or in a covered pot in a moderate oven — turning the roll every 20 minutes to ensure even lacquering and fat rendering. The roll is ready when a skewer meets no resistance at the centre and the exterior carries a dark, glossy coat.

CHASHU — Step 4. Remove the roll and cool completely. Transfer to the freezer for 45 minutes. This partial freezing enables the clean, even 3–5 mm slices essential for ramen service — too thin and the slice disintegrates, too thick and it dominates the bowl. Slice with a sharp knife in a single drawing motion. Reserve the braising liquid: reduced, it is the tare (seasoning base) for soy ramen.

From the canon — Shoyu ramen — the Tokyo ramen tradition, with its clear amber broth and straight, curly noodles — represents the original ramen style and the one with the mo… Soy Ramen (Shoyu Ramen): Tokyo Style →

BUTA-SHABU — Step 1. Bring the kombu dashi to a rolling simmer at the table or on the stove. Prepare the bowl of ice water before the first slice enters the pot. Swirl one or two slices of pork belly through the broth for 30 seconds, until the pink has just vanished. Immediately transfer to the ice water: without this cooling shock the meat continues cooking and becomes overdone. Drain and serve at once with ponzu and goma dare alongside — each sauce draws out different aspects of the pork fat.

BUTAKIMCHI — Step 1. Bring kimchi to room temperature before beginning. Heat a wide pan or iron skillet over high heat until the surface begins to smoke. Add the pork belly strips in a single layer; do not move them immediately. The fat must render partially to coat the kimchi and create caramelisation at the contact surface. When the underside is seared and opaque at the edges, turn the strips.

BUTAKIMCHI — Step 2. Add the kimchi and gochujang directly to the pan. Maintain high heat throughout; a drop in temperature at this stage prevents proper searing and caramelisation. Toss to combine, pressing the kimchi against the pan surface. The dish is ready when the kimchi has darkened slightly at its edges and the fat from the pork has rendered into the kimchi, coating it in a glossy, orange-red film. Finish with sesame oil, toss once, and plate immediately.

III

Quality Hierarchy

Reserve — Heritage-breed pork belly (Berkshire, Kurobuta) with visibly marbled fat layers, sourced from a single farm. The fat renders at a lower temperature and carries flavour the commodity product cannot match. For buta-shabu, sliced to order on a deli slicer.

Estate — Free-range, breed-identified pork belly from a reputable supplier, with even fat-to-lean ratio. Reliable for all three preparations; produces consistent chashu cross-sections and clean shabu texture.

Market — Good supermarket pork belly with a clear fat cap and no excessive water content. Adequate for butakimchi and everyday chashu; trim any uneven fat distribution before rolling.

House — Standard commodity pork belly. Sufficient for butakimchi where the kimchi and high heat dominate the flavour profile. For chashu, the braising liquid does significant compensating work; do not shortcut the searing step.

Sensory Tests

◇Touch. Chashu roll holds firm cylindrical shape under light hand pressure before braising; a skewer meets no resistance at the centre after braising.

◇Sight. Chashu exterior carries a dark, glossy, even lacquer with no pale patches after braising and turning.

◇Sight. Buta-shabu slice is uniformly pale — no pink remaining — within 30 seconds of entering the simmering dashi.

◇Sound. Butakimchi pan maintains a continuous aggressive sizzle throughout cooking; a drop to a gentle simmer signals the heat has fallen too low.

◇Sight. Butakimchi kimchi edges are darkened and the pork fat has rendered into a glossy orange-red coating across the pan.

◇Where it lives or dies. The chashu braising stage — controlling fat rendering, turning to lacquer evenly, and testing for centre tenderness — determines whether the roll achieves the juicy, softly fatty interior with glossy exterior that defines Japanese chashu, or becomes an overdone, greasy cylinder.

V · Cross-Cuisine Parallels

Cantonese char siu (fork-roasted pork): Japanese chashu descends directly from this tradition — the rolled form and braise technique are Japanese adaptations that have created an essentially new product, far less sweet and darker in soy character. Korean samgyeopsal (grilled pork belly): both cultures have developed direct-heat pork belly grilling traditions — Korean samgyeopsal is unmarinated and grilled to order at table; Japanese versions are typically pre-marinated or braised-then-grilled. Italian pancetta braised or slow-roasted: both rolled-and-tied pork belly braising traditions produce similar cross-sectional forms and slow fat-rendering results — pancetta cotta parallels the rolled chashu approach.

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What to Pour

The pairing

Nikka From The Barrel

Nikka Whisky — Miyagikyo Distillery · Miyagikyo — Nikka 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

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The whole pairing

VII · Origin & Lineage

Buta bara preparations span multiple traditions within Japanese cooking. Chashu derives from Cantonese char siu (fork-roasted pork), entering Japan via the Meiji era; the Japanese adaptation — rolled, tied, braised in soy-mirin-sake, restrained in sweetness — has diverged so far from its source that the Chinese origin is largely forgotten in contemporary ramen culture. Buta-shabu developed within the shabu-shabu hot-pot tradition indigenous to Japan. Butakimchi is a Korean-Japanese fusion preparation, now entirely embedded in Japanese home cooking and izakaya culture. The Okinawan rafute tradition, noted in the Okinawan cuisine entry, represents a parallel pork belly lineage using awamori. Source: Tsuji, S. (1980). Japanese Cooking: A Simple Art. Kodansha. (Chapter on meat preparations.)

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