Northern Herb Curry with Chicken (Gaeng Khae Gai)

Ingredients

Equipment Needed

• •Heavy granite mortar and pestle (krok hin) for the kreung tam
• •Medium stockpot or clay pot
• •Small dry pan for toasting spices
• •Sticky rice steamer (huad) or improvised steamer setup

Instructions

1. 1

   Toast the dried spices

   Set a dry pan over medium heat. Add the coriander seeds, cumin seeds, and black peppercorns. Toast them, shaking the pan, for about 2 minutes until fragrant and just starting to darken. You'll smell them before you see the color change: warm, earthy, almost smoky. This is the Burmese trade route in your mortar. Central Thai pastes don't use these. Lanna does. The difference matters. Let them cool for a minute before pounding.

   Toasting whole spices before pounding blooms the volatile oils trapped inside the seed coat. Raw coriander seed tastes flat and citric. Toasted coriander has depth, warmth, and a nutty sweetness. Thirty seconds of attention changes the entire paste.
2. 2

   Pound the kreung tam

   Start in the granite mortar with the toasted spices and salt. Pound to a powder. This is your foundation layer. Add the soaked, seeded dried chilies and pound until they break down into the spice powder, forming a rough, fibrous mass. Next: the lemongrass, then the ginger, then the garlic, then the shallots. Each goes in only after the previous ingredient is incorporated. You're building the paste in layers, hardest to softest. The kapi or tua nao goes in last: pound it in until the paste is cohesive, fragrant, and slightly oily. It won't be smooth like a Central Thai paste. Lanna kreung tam has more texture, more body. That's correct.

   If using tua nao instead of kapi, crumble the disc and dry-toast it lightly in the same pan you used for the spices. It'll smell intense, fermented, almost cheesy. That's the Lanna umami. It does the same structural job as shrimp paste (salt plus fermented protein depth) but the flavor profile is completely different: earthier, funkier, and entirely land-based. Mountain cuisine, not coastal.
3. 3

   Cook the paste in water

   Bring the water to a boil in a pot. This is where gaeng khae departs from every Central Thai curry you've ever made. No coconut cream to crack. No oil separation. You're dissolving the paste directly into water. Drop all the kreung tam into the boiling water and stir until it dissolves and the broth turns ochre-brown and aromatic. Let it boil for 3 to 4 minutes so the paste fully infuses. The kitchen should smell like ginger, dried spice, and fermented depth. If it just smells like hot water, you didn't pound the paste hard enough.

   Ajarn always said: without coconut fat to carry flavor, the kreung tam has to do all the heavy lifting. In a gaeng khae, if the paste is weak, the curry is weak. There's nowhere to hide. Pound it properly.
4. 4

   Simmer the chicken

   Add the chicken pieces to the broth. Bone-in is non-negotiable here. The bones release collagen and flavor into the water-based broth over time, giving it body that coconut cream would otherwise provide. Simmer, not boil, for about 12 to 15 minutes until the chicken is cooked through and the broth has taken on a richer color. Skim any foam that rises. Season with the fish sauce and palm sugar. Taste. It should be savory and aromatic first, with just a whisper of sweetness to round the edges. Not sweet. Round.

5. 5

   Add the vegetables

   Add the pumpkin or chayote and the quartered eggplant. These need about 5 minutes to cook through. The pumpkin should be tender but not falling apart. The eggplant softens and absorbs the broth. Stir gently. This is a curry, not a stir-fry. Respect the pace.

6. 6

   Finish with the wild herbs

   Kill the heat. Now the herbs go in. All of them. Phak khae, cha-om, phak wan, lemon basil. A massive handful of each, torn and dropped into the hot broth. Stir once to submerge them. They wilt in the residual heat but should not cook. The herbs are alive in this curry: bitter, green, vegetal, aromatic. If you boil them, they go dark and lose everything that makes them special. Thirty seconds in the hot broth. That's your window. Taste the broth one final time. Adjust fish sauce if needed. Ladle into bowls. The surface should be crowded with herbs, the broth underneath dark and fragrant. Serve immediately with sticky rice (khao niew). Not jasmine. Sticky rice. Always.

   The herbs are not garnish. They are half the dish. Gaeng khae without a mountain of wild greens is just chicken broth with paste. The name "khae" literally refers to these foraged herbs. Skimp on them and you've missed the entire point.

Chef Tips

• •Gaeng khae is a Lanna curry. The paste uses ginger, not galangal. This is the single biggest tell between a Northern Thai and Central Thai kreung tam. Galangal dominates Central and Southern pastes. Ginger dominates the North. If someone hands you a gaeng khae recipe with galangal in the paste, they've defaulted to Central Thai technique. Send it back.
• •The wild herbs (phak khae, cha-om, phak wan) are increasingly available at Southeast Asian grocery stores, especially those serving Thai, Lao, and Burmese communities. Cha-om (climbing wattle) is the easiest to find. Phak wan (sweet leaf, Melientha suavis) is harder but appears seasonally. If you truly cannot source the wild herbs, use a combination of lemon basil, Vietnamese mint, and sawtooth coriander. You'll get herbal complexity, but know that the specific bitterness of phak khae is irreplaceable. That bitterness is the point.
• •Tua nao (fermented soybean discs) is a Lanna ingredient that predates the Central Thai reliance on kapi (shrimp paste). It serves the same structural purpose in the paste (fermented protein providing umami and depth) but with a completely different flavor: earthy, funky, almost cheese-like. If you can find tua nao, use it. If you can't, kapi works. But the curry tastes different. Regional ingredients create regional identity. That's not a problem. That's the whole point.
• •Serve gaeng khae with khao niew (sticky rice) only. In Lanna, jasmine rice is not traditional. You eat with your hands: pinch off a ball of sticky rice, use it to scoop curry and herbs. The sticky rice absorbs the broth and provides the starch that coconut milk would in a Central Thai curry. The accompaniment is part of the system.

Advance Preparation

• •The kreung tam can be pounded up to a day ahead and refrigerated in an airtight container. The flavors actually deepen overnight as the dried spices continue to meld with the aromatics.
• •The wild herbs must be added fresh at the last moment. Do not prep them more than an hour ahead; they wilt and oxidize quickly. Keep them wrapped in a damp cloth at room temperature until you're ready to add them to the curry.
• •Sticky rice needs to be soaked in water for at least 4 hours, ideally overnight, before steaming. Plan this step well ahead. You cannot rush sticky rice.

Frequently Asked Questions

Nutrition Information

1 serving (about 420g)