Khao Kha Mu (ข้าวขาหมู)

The Dish That Improves Overnight

Khao kha mu arrived with Teochew Chinese migrants and became one of Bangkok's defining plates: rice under a slice of braised pork leg, skin shimmering, a braised egg, pickled mustard greens, and the sour chilli-garlic vinegar that cuts through all that fat.

The benchmark is Charoen Saeng Silom — open since 1959, three generations, Michelin Guide five years running. Its rules are famous: front legs only, and the shop closes in the afternoon to start braising tomorrow's legs. Its signature nobody copies: the leg is served beside the rice, never piled on top, so the rice never goes soggy. The recipes agree on the deeper rule — TrueID's shop recipe rests the pot twelve hours minimum, and the home cooks put it plainly: leave it overnight, the more you reheat it the richer it gets. This is the only dish in the series that is deliberately better the day after you make it.

The Recipe (shop quantities — serves a crowd, keeps well)

The sauce — น้ำส้มพริกดอง

The Method

1. Tighten the skin. Leg washed, dried, portioned — then fried over medium heat about 5 minutes a side until the skin pulls tight. That tight skin is what survives a four-hour braise.
2. Caramel before soy. Palm sugar melted to caramel, water added at once and stirred, then the oyster sauce and light soy, the bruised garlic, peppercorns and coriander roots, and the cinnamon. The colour and depth come from the caramel — the ancient versions never touch phalo powder.
3. Braise long and low. Leg in, the spice bag (cinnamon, star anise, Sichuan pepper, peppercorns) in, shiitake in. Hard boil, then low-medium simmer 3–4 hours until the meat gives.
4. Rest it — this is not optional. At least 12 hours, ideally overnight, then reheat 30–60 minutes before serving. The dish is deliberately better the next day; the rest is the recipe.
5. Eggs in the pot. Boiled eggs simmered in the braising liquid until they take the colour.
6. The sour counter. Chillies and garlic pounded with salt, sugar and vinegar — the sharp edge against the fat.
7. The greens. Pickled mustard blanched in plain water about an hour, drained, then simmered in a little braising liquid with sugar for half an hour.
8. Plate. Hot rice, the leg sliced with its skin, half a braised egg, the mustard greens, braising liquid spooned over, the chilli-vinegar sauce on the side.

Where Thai Sources Disagree

How Western Versions Get It Wrong

• No rest. A same-day quick braise misses the point — this dish is built to sit overnight and be reheated. The rest is the recipe.
• Soy-only colour. Skip the palm-sugar caramel and the braise stays flat and one-note. Caramel first, soy second.
• Lean cuts. Skinless, boneless pork cannot become this dish. The skin and gelatine are the point.
• No sour. Without the chilli-garlic vinegar and the pickled mustard, the fat has nothing to cut it.
• Drowning the rice. Braising liquid spooned over, not poured — Charoen Saeng serves the leg beside the rice for exactly this reason.
• Instant-pot "same result." Pressure cooks, but it can't rest, and the rest is where the flavour settles.

UK Ingredient Notes

• Pork leg: ask a butcher for a whole pork hock or shank — front if they can tell the difference. Chinese grocers often stock them frozen, skin on.
• Palm sugar: Asian grocers, the round golden cakes. Dark soft brown sugar is the fallback for the caramel.
• Phalo powder (ผงพะโล้): Asian grocers' spice aisles — or skip it and run the ancient version.
• Coriander roots: Thai grocers sell coriander with roots on; the roots are the flavour base.
• Pickled mustard greens (ผักกาดดอง): vacuum packs or tins in Chinese grocers — sometimes labelled "salted mustard."
• Jinda chillies for the sauce: red bird's eye or any fresh red chilli works; the vinegar does the work.
• Shiitake: fresh or soaked dried — both standard.

Sources

This recipe is translated from the following Thai-language sources. Where they disagree, we've said so.