Kakuni is a beloved Japanese comfort dish featuring fork-tender pork belly slowly simmered in a savory-sweet soy and mirin broth. The Nagasaki version is famous for its rich glaze, melt-in-your-mouth texture, and traditional pairing with steamed buns, mustard greens, or grated daikon.
Prep Time20 mins
Cook Time150 mins
Total Time170 mins
Servings4
Yield4 servings
Nutrition Facts
Per serving (estimated)
- 620 kcalCalories
- 48 gFat
- 17 gSaturated Fat
- 12 gCarbs
- 1 gFiber
- 9 gSugar
- 28 gProtein
- 1120 mgSodium
- 460 mgPotassium
- 38 mgCalcium
- 1.6 mgIron
- 2 mgVitamin C
- 18 mcgVitamin A
Ingredients
For the pork and broth
- 1.5 lbs (700 g) skin-on pork belly block
- 3 cups water
- 4 inches dried kombu
- 1 oz bonito flakes
- 1/2 cup soy sauce
- 1/2 cup mirin
- 1/2 cup sake
- 3 tbsp granulated sugar
- 2 inch piece fresh ginger, sliced
- 4 garlic cloves, smashed
For the aromatics and garnish
- 4 large shiitake mushrooms, scored
- 4 hard-boiled eggs, peeled
- 2 scallions, thinly sliced
- 1 tbsp toasted white sesame seeds
- Optional: steamed manju buns or hot cooked rice for serving
Directions
- Bring 3 cups of water to a gentle simmer in a large pot, add kombu and steep 10 minutes, then remove kombu and stir in bonito flakes; steep 5 more minutes and strain to make dashi.
- Cut the pork belly into 4 equal blocks about 3 inches wide, leaving the skin attached. Place in a pot of cold water, bring to a boil, and simmer 8 minutes to remove impurities; drain and rinse under cold water, patting the pieces dry with paper towels.
- In a heavy Dutch oven, combine the prepared dashi, soy sauce, mirin, sake, sugar, ginger, and garlic. Bring to a simmer over medium heat, stirring until the sugar dissolves completely.
- Add the blanched pork belly pieces skin-side down along with the shiitake mushrooms. Partially cover and simmer gently for 90 minutes, turning the pork every 20 minutes to ensure even cooking.
- Add the peeled hard-boiled eggs to the broth and continue to simmer uncovered for 30 more minutes, allowing the sauce to reduce to a glossy, syrupy glaze that coats the pork.
- Carefully remove the pork, eggs, and mushrooms. Slice each pork block into 1-inch thick slices, keeping the skin intact, and arrange over rice or inside warmed manju buns.
- Spoon a generous amount of the reduced glaze over the pork, then top with scallions and toasted sesame seeds; serve the eggs and mushrooms alongside.
- For best flavor, let the braised pork rest in the cooled broth overnight in the refrigerator, then reheat gently before serving the next day.
Cook’s Notes
- Use a thick, evenly layered piece of pork belly with skin on for the silkiest texture and best presentation.
- Simmer gently rather than boiling to keep the fat emulsified in the broth and prevent the meat from toughening.
- The flavor deepens significantly if you make this a day ahead and store the pork submerged in its broth overnight.
- Traditional Nagasaki kakuni is often served inside warm manju buns with a dab of mustard or karashi for a balanced bite.
- Trim excess surface fat only if needed; leaving some fat cap is essential for the signature glossy mouthfeel.










