Sai Ua (ไส้อั่ว)

The Sausage Chiang Mai Grills

The name is a job description. Aroifin explains it: อั่ว means to stuff, to insert, to push into the middle — sai ua is literally "stuffed intestine", pork and herbs packed into a casing and grilled. Like most northern food it began as preservation: the pork, aromatics and chillies keep for a day or two, longer refrigerated or vacuum-sealed, which is exactly how the market stalls now sell it.

The build starts with a paste pounded from dried chillies, lemongrass, galangal, turmeric, coriander roots, garlic, shallots, kaffir lime zest, shrimp paste and toasted coriander seeds with cumin — the north's aromatics, the ones that announce the sausage from three stalls away. That paste is kneaded into minced pork with fish sauce, light soy and sugar, then slivered kaffir lime leaves and chopped spring onion and coriander go in. Kapook and Aroifin share the same honest step before any stuffing happens: microwave a spoonful, taste it, and fix the seasoning while you still can.

Then the fire. Kapook's home cook bakes hers at 375°F, fifteen minutes a side, and admits her husband puts it in a sandwich while she insists on ข้าวเหนียวร้อน ๆ, hot sticky rice. Wongnai's recipe steams the sausages for twenty minutes first, then grills them low over charcoal. Kapook's liver version skips the steam and grills straight over the coals — ไฟเบา ๆ, low heat, because a hot fire bursts the casing. Every source agrees on that one thing: the fire must be patient.

The Recipe (home version, from Kapook)

The selling batch (Aroifin): 1.5 kg minced pork with fat, 4 tbsp red curry paste (or the pounded paste), 1 tbsp turmeric powder, 3 tbsp oyster sauce, 3 tbsp fish sauce, 2 tbsp light soy, 1 tsp brown sugar, 2 tbsp slivered kaffir leaves, 1 cup spring onion and coriander — about 15 servings, vacuum-sealed for sale. The liver build (Kapook, ไส้อั่วตับ): 1 kg lean and 2 kg fatty mince with 2 kg chopped pork liver (1 kg liver per 1.5 kg pork), market-bought น้ำพริกแกงเมือง, MSG, and low charcoal only — no steaming. The steam-then-grill batch (Wongnai): 100 g shrimp paste and 200 g coriander per 1 kg pork, steamed 20 minutes, then low charcoal.

The Method

1. The paste. Pound the dried chillies with the salt first — Kapook and Aroifin agree on the order — then the hard aromatics: galangal, lemongrass, coriander roots, garlic, shallots, kaffir zest, shrimp paste, turmeric, and the toasted coriander-cumin. Pound until fine.
2. The mix. Knead the paste into the minced pork with the light soy, fish sauce and sugar, then fold in the slivered kaffir lime leaves and the chopped spring onion and coriander.
3. The taste test. Microwave a small spoonful for 20–30 seconds and taste — Kapook and Aroifin both do this before stuffing, while you can still fix the seasoning.
4. The casings. Rinse the casings properly — Kapook's cook washes with salt, then vinegar, then flour; Wongnai's rubs with tapioca starch four to six rounds, turning them inside out. Stuff firmly but never tight: the meat expands on the fire and bursts the casing.
5. The fire. Steam for about 20 minutes, then grill low over charcoal (Wongnai) — or grill straight over low coals (Kapook's liver version). If you bake, Kapook's home cook uses 375°F, 15 minutes a side.
6. The serve. Slice and eat with hot sticky rice — the only pairing every Thai source actually names.

Where Thai Sources Disagree

How Western Versions Get It Wrong

• Frying it like a bratwurst. Thai method is low charcoal — or the steam-then-grill route. A hot pan or a fierce grill bursts the casing and leaves the middle raw; the Thai sources warn about this explicitly.
• Skipping the herbs. A pork-garlic-chilli sausage is not sai ua. Kaffir lime leaves, lemongrass, galangal, turmeric and coriander root are the dish — Kapook even refuses the store-bought-paste shortcut unless you pound extra aromatics in.
• Over-stuffing. Every Thai source repeats it: firm but not tight. The meat expands on the grill; over-stuffed casings split, and the fat runs into the fire.
• No taste test. Thai home cooks microwave a spoonful and adjust before stuffing. Western recipes season blind and adjust at the table, when it's far too late.
• Serving it with mustard or sweet chilli. Sai ua is eaten with hot sticky rice. That's the pairing the Thai sources name; everything else is a western table's idea.

UK Ingredient Notes

• Pork casings: butchers and sausage-making suppliers sell natural hog casings; Thai grocers carry them frozen. Artificial casings work too — one Wongnai recipe uses them.
• Pork: 20% fat pork mince from any supermarket does the job; Aroifin's tip is pork neck or slightly fatty meat so the sausage doesn't dry out.
• Kaffir lime leaves: frozen year-round at Thai grocers — the slivered leaves are essential, and the zest goes in the paste.
• Lemongrass, galangal, fresh turmeric, coriander root: all standard at Thai grocers and most Asian supermarkets.
• Shrimp paste and fish sauce: any Thai grocer, and most UK supermarkets now stock fish sauce. Charcoal: any BBQ — keep it low, and if baking, 190°C (375°F) for 15 minutes a side is Kapook's tested fallback.

Sources

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