Thit Kho Trung (Vietnamese Caramelized Pork Belly and Eggs)

Blanching the pork before marinating removes blood proteins and surface impurities that would otherwise muddy the sauce. This step produces a cleaner, more translucent braising liquid that lets the caramel color come through clearly. The technique is standard across Vietnamese braises and appears in bo kho and bun bo hue as well.

The marinade performs multiple functions at once. Fish sauce delivers salt along with glutamate, the amino acid responsible for the savory depth that salt alone cannot provide. Sugar assists with caramelization when the pork hits the hot pot. Black pepper contributes volatile aromatics that bloom in the heat, and the garlic and shallots create a fragrant base layer that permeates the meat rather than floating only in the liquid.

Coconut soda works as both sweetener and tenderizer. Its mild acidity and natural sugars help break down connective tissue in the pork belly, and the coconut flavor adds a subtle tropical sweetness that rounds out the sauce without competing with the fish sauce. This same technique appears in several Vietnamese braises. The carbonation in the soda may also contribute to slightly faster tenderization compared to still coconut water, though the difference is modest.

Simmering uncovered is deliberate. Unlike many Western braises that call for a sealed lid, thit kho trung benefits from evaporation. The sauce concentrates as it reduces, becoming glossy and deeply flavored. The eggs, exposed to this increasingly concentrated liquid, absorb color and seasoning through the fine cracks in their whites, turning amber all the way through by the end.

Protein: Pork shoulder or pork butt produces a leaner dish with a meatier texture but less of the silky fat. Bone-in pork belly or pork spare ribs add extra body to the sauce. Fried tofu is the traditional vegetarian substitute. Braise it for 20 minutes so it absorbs the sauce.

Eggs: Duck eggs are traditional in many families and produce a richer yolk. Quail eggs are a popular alternative, especially for Tet presentations, and need only 5 minutes of boiling. For jammy yolks instead of hard-boiled, cook eggs for 7 minutes instead of 10, peel carefully, and add them only in the last 15 minutes of braising.

Caramel color (nuoc mau): For a more traditional approach, skip the thick soy sauce and make a caramel coloring instead. Add 30 ml of water and 25 g of sugar to the bottom of the braising pot. Heat over medium-high until the sugar melts, turns dark amber, and smells like toffee. Remove from heat immediately, then add the blanched pork and marinade directly into the caramel. This produces a deeper, more complex sweetness. Hungry Huy's recipe uses this method as the primary coloring agent.

Coconut soda alternatives: Fresh coconut water (355 ml) produces the most traditional Southern Vietnamese flavor. Cola creates a slightly darker, more molasses-toned sauce, which is the basis for Vicky Pham's thit kho tau coca-cola variation. 7-Up or Sprite add a citrus-bright sweetness. Plain water with 15 g of additional sugar works in a pinch but lacks the coconut undertone.

Slow cooker: Complete steps 1 through 6 on the stovetop, then transfer everything to a slow cooker. Cook on low for 4 to 5 hours. Add the eggs in the final hour. The sauce will not reduce as much, so you may want to pour the liquid into a saucepan and simmer it down before serving.

Pressure cooker: After sauteing in step 5, add the liquid and cook on high pressure for 25 minutes with natural release. Add the eggs, seal again, and cook on high pressure for 5 minutes with quick release. Reduce the sauce on saute mode if needed.

Thit kho trung is a side dish by nature, meant to share a table with rice and at least one or two other preparations. The most traditional pairing is steamed jasmine rice with a side of pickled mustard greens (dua cai chua), whose sharp acidity cuts cleanly through the richness of the pork fat. A simple plate of sliced cucumbers or blanched bok choy serves the same purpose.

For a full Vietnamese home-style meal, serve alongside canh chua, the sweet-and-sour tamarind soup, which provides a bright, brothy contrast. Bun cha, with its charred grilled pork and fresh herbs, makes a compelling pairing if you want to explore two very different approaches to pork and fish sauce seasoning. A bowl of pho bo at the start of the meal and thit kho trung with rice as the centerpiece is a pattern you will find in many Vietnamese households during cooler months.

The braising liquid is as valuable as the meat itself. Spoon it generously over rice and let it soak in. Some families serve the broth separately as a dipping sauce for raw lettuce, sliced cucumber, or steamed vegetables.

Advance preparation: Thit kho trung improves with time. The pork absorbs more of the braising liquid as it cools, and the eggs take on deeper color and flavor overnight. Making it a day ahead is standard practice, especially during Tet when large batches are prepared for the holiday.

Refrigerator: Transfer to an airtight container and store for up to 5 days. A thick layer of white fat will solidify at the surface when chilled. This is normal. You can scoop off as much of it as you like to produce a leaner result before reheating.

Reheating: Warm gently on the stovetop over medium-low heat. The sauce will reduce further with each reheating, becoming more concentrated and flavorful. Add a splash of water if it thickens too much. If using a microwave, pierce the eggs or halve them first. Whole eggs can burst when microwaved, and the cleanup is memorable for all the wrong reasons.

Freezing: Thit kho trung freezes well for up to 6 months. The pork and sauce freeze and reheat without significant loss of texture. The eggs may become slightly rubbery after freezing, so consider freezing the pork and sauce separately and cooking fresh eggs when you reheat. Thaw overnight in the refrigerator before reheating on the stovetop.