Gai Yang — Isaan Grilled Chicken / ไก่ย่าง

Ingredients

• 1 (about 1.4 kg) Whole chicken, spatchcocked — backbone removed, pressed flat
• For the marinade
• 30 g Coriander root, scraped clean, roughly chopped
• 8 g White pepper, whole, freshly ground coarse in a mortar
• 20 g Garlic, peeled, roughly chopped
• 30 ml Fish sauce
• 20 g Palm sugar, shaved or grated
• 10 ml Dark soy sauce
• To serve
• 400 g Sticky rice, soaked and steamed in the standard way
• 1 portion Som tam, prepared separately
• 1 portion Nam jim jaew, prepared separately; the canonical accompaniment

Method

1. 1
   Pound coriander root, white pepper, and garlic together in a mortar until a coarse paste forms, working until the root breaks down and releases its sharp, resinous fragrance — a smooth paste would trap the aromatics rather than distribute them through the flesh. Add fish sauce, palm sugar, and dark soy sauce; work briefly to combine. The paste should smell fiercely of coriander root with a warm, peppery back note.
2. 2
   Spatchcock the chicken by removing the backbone entirely; press the bird flat so it lies at an even thickness, which will allow it to grill uniformly rather than leaving the breast overcooked while the thigh catches up. Work the marinade under the skin and into the flesh on all surfaces, pushing it as deep into the thighs and shoulders as your fingers will reach. Place the chicken in a tray, cover, and refrigerate overnight — a minimum of twelve hours — so the marinade moves into the centre of the flesh rather than sitting at the surface, producing a flavour no amount of grilling can otherwise achieve. This is where the dish lives or dies: shortcuts at this stage leave a superficial seasoning that the fire cannot correct.
3. 3
   Prepare a charcoal fire to medium-low heat, letting the coals ash over completely with no naked flame, so the chicken cooks through gently without the skin scorching before the inside is done. Hold a hand 15 cm above the grate; it should be comfortable for four to five seconds. Lay the spatchcocked chicken skin-side up.
4. 4
   Grill for 30–40 minutes total, turning the chicken every five minutes so the palm sugar in the marinade caramelises gradually rather than burning against the grate before the flesh is cooked through. The skin should deepen steadily to a uniform, dark golden colour with localised caramelised patches — not blackened. Adjust the chicken's position over the coals if any area is colouring faster than the rest.
5. 5
   The chicken is done when the skin is fully caramelised and golden across the surface, the joints move freely, and any juices run clear. Rest for five minutes before jointing, so the juices that have been driven toward the centre by the heat redistribute back through the flesh and the chicken cuts cleanly.
6. 6
   Joint and serve immediately alongside sticky rice, som tam, and nam jim jaew.