Cá Kho Tộ (Vietnamese Caramelised Braised Fish in Clay Pot)

About This Recipe

Cá kho tộ is quintessential southern Vietnamese comfort food — a whole fish or fish steaks braised in a clay pot (kho means to braise until reduced and caramelised) in a mixture of fish sauce, caramel, sugar, ginger and chilli until the liquid reduces to a sticky, mahogany-dark coating. The dish is deeply savoury with a complex sweetness from the caramel, and the fish absorbs the intense flavours as it braises. Traditionally made with catfish (cá tra or cá basa), which can withstand the long braising without falling apart, but salmon and mackerel also work beautifully. It is served with white rice and a simple vegetable side — the cooking liquid, which becomes a thick, concentrated sauce, is as prized as the fish itself. Cá kho tộ is a staple of Vietnamese family cooking and considered an excellent example of kho technique — one of Vietnamese cuisine's foundational cooking methods. Rooted in the everyday cooking of Vietnamese kitchens, Cá Kho Tộ (Vietnamese Caramelised Braised Fish in Clay Pot) balances technique and tradition: the catfish fillets or salmon steaks, cut into large pieces is treated with care, drawing on time-honoured ratios that locals have refined across generations. The dish carries an unmistakable sensory signature — aromas that fill the kitchen as it cooks, layered textures that reveal themselves bite by bite, and a depth of flavour that comes from patient seasoning rather than shortcuts. Whether served as a weeknight dinner or as the centrepiece of a celebratory table, it reflects a regional pantry where local produce, seasoning habits and cooking vessels shape the final result. Home cooks who make this dish often note how forgiving it is once the core method is understood, and how a few small choices — the freshness of the catfish fillets or salmon steaks, cut into large pieces, the order of additions, the resting time at the end — separate a good version from a memorable one. This recipe walks through those choices so the dish arrives with the character it has on its home turf.

Ingredients

Serves 4

• 600 gcatfish fillets or salmon steaks, cut into large pieces
• 3 tbspfish sauce
• 1 tbspsoy sauce
• 3 tbspcaster sugar
• 2 tbspwater
• 3 cmginger, finely sliced
• 4 clovesgarlic, minced
• 2shallots, thinly sliced
• 2fresh red chillies, sliced
• 2 tbspvegetable oil
• 100 mlcoconut water or young coconut juice(adds subtle sweetness)
• 2 tbspsliced spring onion, to garnish

Instructions

1. 1

   Make the caramel

   Place sugar and water in a small heavy saucepan. Cook over medium heat without stirring until it turns deep amber — a dark caramel colour. Remove from heat immediately (it continues cooking from residual heat).

2. 2

   Add aromatics

   In the same pot or a clay pot if you have one, heat oil over medium heat. Add shallots, garlic and ginger. Stir-fry 2 minutes until fragrant.

3. 3

   Build the braising liquid

   Add the caramel, fish sauce, soy sauce and coconut water. Stir to combine — the caramel will seize but will melt again as it heats. Taste: it should be intensely savoury, moderately sweet, and slightly salty.

4. 4

   Add the fish

   Gently place fish pieces in the braising liquid. Add chillies. Bring to a gentle simmer.

5. 5

   Braise and reduce

   Cook uncovered over low heat for 30–35 minutes, occasionally spooning sauce over the fish, until the liquid has reduced to a thick, glossy coating. Do not stir — the fish will fall apart. Shake the pot gently if needed.

6. 6

   Serve

   Serve directly from the clay pot if using, garnished with spring onion. Serve with steamed white rice.

Variations

• •

  Thịt kho tộ: make the same dish with pork belly and hard-boiled eggs instead of fish — equally iconic, especially at Tết (Vietnamese New Year).

• •

  Tôm kho: replace fish with large prawns. Reduce cooking time to 10–12 minutes.

• •

  Add pineapple chunks to the braising liquid for a sweet-sour variation popular in some regions.

• •

  Vegetarian: replace the main protein with mushrooms, paneer, tofu or hearty beans for a meat-free version.

• •

  Spicier: add fresh chilli, a chilli paste or a pinch of cayenne with the aromatics for a warmer profile.

Storage

Improves significantly the next day as the fish absorbs more of the sauce flavour. Keeps refrigerated for 3 days. Reheat gently over low heat with a splash of water.

Frequently Asked Questions