Vietnamese
Cá kho tộ
A deeply savory Vietnamese clay-pot braise of catfish simmered in caramel, fish sauce, pork belly, shallots, garlic, and black pepper. The sauce cooks down glossy and salty-sweet, made to spoon over hot steamed rice.
Ingredients
- Catfish steaks, rinsed and patted dry300g
- Pork belly, thinly sliced80g
- Fish sauce2 tbsp
- Granulated sugar1 1/2 tbsp
- Shallot, finely minced1 small
- Garlic cloves, finely minced2
- Fresh red bird's eye chile, lightly crushed1
- Fresh coconut water1/2 cup
- Neutral oil1 tsp
- Freshly ground black pepper1 tsp
- Scallion, sliced1
Method
- Place the catfish in a bowl with the fish sauce, minced shallot, minced garlic, chile, and 1/2 tsp black pepper, then turn gently to coat and marinate for 20 minutes.
- Set a small clay pot or heavy saucepan over medium heat and add the oil and sugar.
- Cook the sugar without stirring much until it melts into a deep amber caramel, swirling the pot carefully so it colors evenly.
- Add the sliced pork belly and stir for 2 minutes so the fat begins to render and the caramel coats the pork.
- Add the marinated catfish and all its marinade to the pot, arranging the pieces in a single layer.
- Let the fish sear undisturbed for 2 minutes, then carefully turn once to coat both sides in the caramel sauce.
- Pour in the coconut water, bring to a gentle boil, then reduce the heat to low.
- Simmer uncovered for 25 to 30 minutes, occasionally spooning sauce over the fish, until the pork is tender and the sauce is reduced, dark, and glossy.
- Taste the sauce and adjust with a small splash of fish sauce if needed, keeping it boldly salty-sweet.
- Finish with the remaining black pepper and sliced scallion, then serve hot directly from the pot with steamed jasmine rice.
Common questions
Can I substitute another fish for catfish in cá kho tộ?
Yes. Use a firm, meaty fish that won’t fall apart, like salmon steaks, snakehead, carp, or seabass. Avoid delicate fillets. Adjust simmering time down if the fish pieces are thinner or less dense than catfish.
How long should I simmer cá kho tộ so the pork is tender but the fish doesn’t break?
After adding the coconut water, simmer uncovered on low for about 25 to 30 minutes. Keep the liquid at a gentle bubble, not a hard boil, and spoon sauce over the fish instead of stirring aggressively.
What are the most common mistakes when making cá kho tộ?
The biggest mistakes are burning the caramel, stirring the fish too much, and boiling too hard. Also avoid too much heat after the coconut water goes in, or the fish can break and the sauce can reduce too quickly.
How should I store leftover cá kho tộ, and does it reheat well?
Cool it quickly, then refrigerate in an airtight container for up to 3 days. Reheat gently on low heat with a splash of water or coconut water. The flavor often deepens overnight, but handle the fish carefully so it stays intact.
What should I serve with cá kho tộ?
It’s best with hot jasmine rice to soak up the caramelized sauce. Add steamed vegetables, cucumber, or a simple herb plate on the side. A few extra scallions and black pepper on top give it a fresh finish.