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Japanese · Nagasaki

Kakuni Pork Belly Braised Nagasaki Chinese Influence

Kakuni is the quintessential Japanese braised pork belly preparation — thick cubes of skin-on pork belly simmered for 2-4 hours in dashi, sake, soy sauce, sugar, and mirin until the collagen converts to gelatin and each cube trembles with self-basting unctuousness. The dish derives directly from Dongpo rou (Dongpo pork) of Chinese Hangzhou via Nagasaki's Chinese community during the sakoku isolation period when Nagasaki was Japan's only open port, making it one of the most traceable Chinese-to-Japanese culinary transfers. Where Dongpo uses rice wine and fermented soybean paste (doubanjiang), Japanese kakuni substitutes sake and dashi for a cleaner, more delicately flavored result. The preparation technique requires multiple stages: initial blanching to remove blood and harsh proteins, aromatics (ginger, spring onion) simmering to neutralize pork odor, then the long final braise in seasoned liquid using an otoshibuta drop lid to maintain even immersion. The characteristic result is a cube that holds perfect shape externally while the interior has softened to near-custard tenderness, and the skin has converted entirely to thick, glossy, trembling gelatin. Served in Okinawa as the closely related rafute with more mirin sweetness and awamori rice spirit.

ServesFour portions
Total3 hours 30 minutes active, plus overnight resting
Sourced2of 9 in BC
Cook
I

The Market List

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1.2 kg
pork belly
skin-on, cut into 5–6 cm cubes
Your own market
40 g
fresh ginger
sliced
Origin · New ZealandPurely Artisan Foods · San Diego →
3
spring onions
whole, trimmed
Your own market
For the seasoned braise
500 ml
dashi
Not yet stocked in British Columbia
150 ml
sake
Not yet stocked in British Columbia
100 ml
60 ml
mirin
Not yet stocked in British Columbia
30 g
sugar
Your own market
To serve
10 g
karashi
hot Japanese mustard, at table
Not yet stocked in British Columbia

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II

The Method

1
Place the pork belly cubes in a large pot and cover with cold water. Bring to a vigorous boil over high heat and cook for 5 minutes. Drain, discard the water, and rinse each cube under cold running water, removing any coagulated protein or blood. The cubes should be visibly clean and pale — this is the condition required before further cooking.
2
Return the blanched pork to the pot. Cover again with cold water and add the sliced ginger and whole spring onions. Bring to a gentle simmer and cook, uncovered, for 30 minutes. The water should carry a faint savory steam and the pork should show no trace of the harsh raw odor that characterized it before blanching.
3
Lift the pork cubes from the aromatic liquid and transfer to a wide, heavy braising pot in a single layer. Discard the ginger-and-spring-onion water. Add the dashi, sake, soy sauce, mirin, and sugar. The cubes should be largely — though not fully — submerged. Place an otoshibuta (drop lid) directly on the surface of the liquid, fitting snugly against the tops of the cubes. Bring to a gentle simmer.
4
This is where the dish lives or dies. Maintain the gentlest possible simmer — the surface should shiver, not roll — for a minimum of 2 hours and up to 3, turning each cube once at the halfway point. At no stage should the heat be sufficient to agitate the cubes violently; aggressive boiling will cause them to collapse and shed their skin. At the end of the braise, press a cube with a fingertip through a folded cloth: it must yield with almost no resistance, trembling under the slightest pressure, while still holding its shape externally. If any resistance remains, continue braising in 20-minute increments until this test is passed.
5
Remove the pot from the heat. Allow the cubes to cool in the braising liquid, then refrigerate the entire pot, uncovered, overnight. By morning the liquid will have set to a loose jelly around each cube and a solid cap of rendered fat will have formed on the surface. Lift and discard this fat layer — the sauce beneath should be clear, deep amber, and trembling.
6
Return the pot to a low flame and reheat gently until the jelly dissolves back to liquid and the cubes are heated through. Ladle into deep bowls, spooning the reduced braising liquid over each cube. Serve with karashi mustard alongside. The finished surface of each cube should be glossy and lacquered; the skin should move perceptibly when the bowl is set down.
III

Quality Hierarchy

01
Reserve — Heritage-breed skin-on pork belly — Berkshire or equivalent — with deep intramuscular fat and thick, collagen-rich skin; house-made dashi from first-press katsuobushi and true kombu; aged sake of drinkable quality used in full for the braise.
02
Estate — Butcher-sourced skin-on belly from a named farm, cut to order at 5–6 cm; good-quality commercial dashi stock; honjozo sake rather than cooking sake.
03
Market — Supermarket skin-on pork belly, accurately cubed at home; dashi from reliable instant granules (hon-dashi grade); standard mirin and supermarket soy sauce.
04
House — Skin-on pork belly whatever breed is available; powdered dashi; the braising liquid reduced at the end to compensate for a thinner base stock — acceptable but produces a slightly sharper, less rounded result.
IV

Sensory Tests

◇Sight. The blanched cubes are pale and uniformly clean, free of any grey protein or blood before the aromatic simmer begins.
◇Smell. After the aromatic simmer in ginger and spring onion, no harsh raw-pork odor persists — the steam is clean and faintly savory.
◇Touch. A braised cube pressed gently through cloth yields with almost no resistance and trembles perceptibly, yet holds its square shape without collapsing.
◇Sight. The overnight-chilled braising liquid has set to a trembling, clear amber jelly around each cube, with a solid fat cap resting cleanly on the surface.
◇Sight. The finished cube in the bowl carries a glossy, lacquered sheen and the skin shifts visibly when the bowl is moved.
◇Where it lives or dies. The dish lives or dies at the long seasoned braise: too fierce a heat collapses the cubes and sheds the skin; too short a time leaves the collagen unconverted and the texture irreparably chewy.
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VI

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

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The whole pairing
Pillar VII
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Where the dish comes from and how it came to be — on every recipe.
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Sourced through Provenance

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Purely Artisan Foods
San Diego · fresh ginger, soy sauce
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