Goong Pao (กุ้งเผา)

The Prawn People Suck the Head Of

กุ้งเผา is not just "grilled prawns" — it is the กุ้งแม่น้ำ, the giant freshwater prawn, and its head fat. Aow Takiab Seafood in Hua Hin explains the naming: river prawn and กุ้งก้ามกราม are the same animal, wild against farmed, and the wild ones from the Chao Phraya and Bang Pakong rivers grow bigger heads, longer claws and firmer flesh. The prize inside is มันกุ้ง, the creamy orange tomalley — the reason Wongnai's cook OPORRY. tells you to pick prawns whose head fat is "มันเยิ้ม" (creamy), never hard.

The technique is a ritual of rescue. The prawn is split open from the belly with one firm stroke of a sharp knife — Aow Takiab's chef warns that sawing back and forth turns the meat to mush — the vein and the black sac behind the head are pulled out, and then the tomalley itself is spooned out and set aside. It goes back on only in the final moments over the coals, because left on from the start it would dry out; Aow Takiab's rule is thirty seconds before done, TrueID's cook returns it when the flesh tightens, and Aroifin's version lets it bubble back to life under the lid.

Nothing else goes near the prawn. No marinade, no oil — the flavour comes from the shell, the smoke and the sauce. Kapook calls the น้ำจิ้มซีฟู้ด dipping sauce "ขาดไม่ได้" for the dish: chillies, garlic, coriander root, fish sauce and lime, blended cold — though every kitchen keeps its own balance, as the disagreements below show. At the table the prawn head is not garnish: Aow Takiab's crew spoons the hot tomalley over rice and dips the springy flesh in the sauce. Aroifin's nutritionists put the whole plate at about 1,050 kcal for four people, and 205 grams of protein.

The Recipe (restaurant version, from ครัวคุณต๋อย TV / ร้านปลา 3 น้ำ)

The home batch (Aroifin): 1 kg of river prawns with a small sauce — 3 red chillies, 7–8 bird's eye chillies, 10 garlic cloves, 1 tsp salt, 3 tbsp fish sauce, 2 tsp sugar and 3 tbsp lime juice — 10 minutes prep, 15 minutes over medium coals under a lid; 1,050 kcal for four, 205 g protein. The green sauce (TrueID, บ้านอาชีพกู๋เล็ก): 85 g green bird's eye chillies blended with 250 g syrup, 25 g salt, 200 g lime juice, 20 g coriander root and 65 g garlic — sharp, green, and no fish sauce at all. The basil version (Kapook): the same sauce with sliced Thai basil added, boiled and bottled hot — lime juice squeezed in only at serving — to keep in the freezer for a month.

The Method

1. The cut. Trim the whiskers, legs and tail. Split each prawn in half from the belly down to the tail base and press it open — Aow Takiab insists on one firm stroke of a sharp knife, because sawing back and forth bruises the meat.
2. The clean. Pull out the black vein along the belly and the sac behind the head, then spoon the tomalley out into a small bowl. Keep it — it goes back on later.
3. The fire. Lay the prawns cut side up over medium charcoal and cover with a lid, about 10 minutes (ครัวคุณต๋อย); on a pan it is 2.5–3 minutes over low-to-medium heat with a lid, prawns cook fast and overcooking dries them (Aow Takiab).
4. The return. When the flesh turns orange and begins to spring back, spoon the tomalley onto each prawn, cover and grill until it just bubbles. Aow Takiab adds a final quick flame-burn for the smoky aroma.
5. The sauce. Blend the chillies, coriander roots, garlic, both sugars, lime juice and fish sauce until smooth — or use one of the sauce variants above. Serve the prawns hot; spoon the melted tomalley over rice and suck the heads.

Where Thai Sources Disagree

How Western Versions Get It Wrong

• Using the wrong prawns. Farmed tiger prawns have next to no head fat — the entire point of goong pao is the creamy river-prawn tomalley. If you cannot get river prawns, head-on langoustines are the closest thing, not peeled shrimp.
• Peeling before grilling. The shell holds the moisture and the smoke; the head is eaten, not discarded. Grilled peeled prawns are a different, drier dish.
• Grilling ten minutes a side. Prawns cook in minutes — Aow Takiab's pan version needs 2.5–3, Khun Toi's charcoal version ten under a lid. A long western-style grill turns the flesh to rubber and wastes the tomalley.
• Serving with butter or aioli. The Thai table dips in nam jim seafood — chilli, garlic, coriander root, fish sauce and lime. Butter mutes exactly the sharpness the dish is built on.
• Skipping the tomalley ritual. Removing the head fat, then returning it in the final half-minute, is what keeps it creamy instead of dried out — and spooning it over rice at the table is the signature move of the dish, not an optional extra.

UK Ingredient Notes

• River prawns (กุ้งแม่น้ำ, Macrobrachium): frozen at Thai and Chinese grocers; fresh almost never appears. Head-on whole langoustines are the best UK stand-in — real tomalley, same grill behaviour.
• Bird's eye chillies, Chinese garlic, coriander with roots, limes: all standard in UK supermarkets or Thai grocers.
• Palm sugar: Thai grocers sell it in discs; soft brown sugar works in the sauce if needed.
• Charcoal: a garden barbecue with a lid replicates the Thai covered grill; a covered griddle pan over low-medium heat is Aow Takiab's hotel-kitchen method and works on a gas hob.
• Freshness rules carry over: pick prawns with shiny shells, firm necks and no smell — and if you are buying frozen, thaw them slowly in the fridge so the heads stay intact.

Sources

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