Koi Nuea (ก้อยเนื้อ)

The Salad That Skips the Fire

ก้อย (koi) is the raw branch of the Isaan salad family — the same dressing logic as larb (toasted rice powder, dried chilli, fish sauce, lime, a hill of herbs) applied to meat that never meets heat. Wongnai's recipe puts the signature plainly: the rawness of the beef dressed with larb seasonings, served fresh and red, eaten with raw vegetables and hot sticky rice — and it comes with the caveat every Thai source repeats: use very fresh, clean beef to keep yourself out of trouble.

What makes koi more than Isaan tartare is the bitter turn. TrueID titles its recipe ก้อยเนื้อ ก้อยขม — the same bowl, gone bitter — and the bitterness has two traditional agents: ดีวัว, beef bile, which needs only a spoonful or two, and fresh beef blood, which deepens the colour and the iron note. Neither is compulsory; TrueID adds both "a little, or not at all", and Cookpad's home version is a clean lime-and-chilli salad with no blood and no bile. The full Isaan treatment, as EsanBanna's recipe lists it, can run further still: offal — liver, tripe — into the bowl, plus ขี้เพลี้ย — the bitter digestive fluid the recipe itself glosses as ดีวัว, bile.

And koi rewards the careful cook. Thai sources warn about raw beef in their own pages — TrueID's sister article on larb names ไข้หูดับ (Streptococcus suis infection) and tapeworm as the risks of raw meat, and EsanBanna's koi page lists roundworm, tapeworm and liver fluke before pointing uneasy cooks to its cooked version, ก้อยคั่ว. The Isaan answer is the same one food-safety bodies give anywhere: buy very fresh meat from someone you trust, keep it cold, and eat it the day it is dressed. Koi is not a dish for shortcuts with beef; it is a dish of confidence in it.

The Recipe (from Wongnai's kitchen, serves two)

The other pots. Cookpad's foncooking keeps it minimal: beef, chilli powder, rice powder, fish sauce and lime, then the herbs — no blood, no bile, and the taste profile spelled out: hot and sour lead, salt follows. TrueID's pot is the bitter one — beef chopped fine, chilli, fish sauce and rice powder first, then blood and bile "a little, or not at all", lime and a pinch of MSG, and the same herb roll-call of spring onion, sawtooth coriander, mint and kaffir lime. EsanBanna's pot is the fullest Isaan reading — beef, liver and tripe chopped together, fresh blood stirred through and ขี้เพลี้ย (ดีวัว) for the bitter — with the same hot-sour-salt balance, and a note that uneasy cooks can stir-fry the same bowl as ก้อยคั่ว. All four dress raw, by hand, in a bowl.

The Method

1. The herbs. Slice the shallots, spring onions, coriander, sawtooth coriander and kaffir lime leaves as finely as you can. Wongnai's tip is the sharp knife — herbs cut with a dull blade bruise and darken before they reach the bowl.
2. The meat. Pat the beef dry with kitchen paper (Wongnai: blot it before you cut) and strip any sinew, then chop by hand. Wongnai slices it into thin strips against the grain so the dressing soaks in; TrueID chops it to a fine mince; Cookpad minces. No source uses a blender — the texture is hand work, and the meat stays cold until it is dressed.
3. The dressing. Mix the beef with the dried chilli and toasted rice powder first — Cookpad's order — then add the fish sauce and lime juice and taste: hot and sour in front, salt behind.
4. The bitter and the blood. Stir in the bile a little at a time — it is fierce, and two spoonfuls is already plenty — then the blood if you are using it. This is the turn that makes ก้อยเนื้อ into ก้อยขม, the bitter-blooded bowl.
5. The fold. Fold through the shallots, herbs and kaffir lime leaves, lightly — once, not until bruised.
6. The table. Plate it cold, scatter the mint on top, and serve immediately with the raw vegetable plate — Thai basil, cabbage, cucumber and lettuce — and hot sticky rice. Koi does not wait and it does not keep.

Where Thai Sources Disagree

How Western Versions Get It Wrong

• Cooking it. Western recipes "lightly sear" or "flash-fry" the beef, then still call it koi. A seared beef salad is larb territory, not koi. Every Thai source here starts from raw beef, handled with care — rawness is the dish, and the safety work happens before the bowl, not in a pan.
• Dressing it like European tartare. Capers, mustard, egg yolk and shallot vinaigrette have nothing to do with koi. The dressing is toasted rice powder, dried chilli, fish sauce and lime — the larb kit, applied cold — with herbs, never mustard.
• Losing the toasted rice. ข้าวคั่ว is the Isaan signature and the first thing western versions drop. It is not texture decoration: the gritty roasted-rice powder binds the dressing to the meat and carries the smoky-nutty note that places the bowl in Isaan rather than in a bistro.
• Skipping the bitter. The bile (and blood) is what makes ก้อยขม the dish it is. Western tartares chase acid instead, and the bitter note — the thing Isaan regulars order the dish for — disappears.
• No herb-and-veg plate. Koi is not a canapé; it arrives as a cold salad meal with cabbage, cucumber, Thai basil and lettuce, and hot sticky rice. Serving the beef alone on a crisp is missing half the dish.

UK Ingredient Notes

• The beef: buy very fresh, well-handled sirloin or fillet from a butcher you trust and use it the same day. Freezing at −20°C for 24 hours before thawing in the fridge kills tapeworm cysts — worth doing for a raw dish. Keep the meat refrigerated until the moment you cut it, and follow NHS and FSA advice on raw meat: this dish is not for pregnant people, young children, or anyone immunocompromised.
• Bile (ดีวัว / น้ำดีวัว): sold frozen at Thai grocers, sometimes labelled "beef bile". It is intensely bitter — add it drop by drop and taste. The salad is excellent without it.
• Blood (เลือดวัว): fresh beef blood from halal butchers or Thai grocers, sometimes sold already coagulated in blocks — crumble a little in. Optional, like the bile.
• Sawtooth coriander (ผักชีฝรั่ง / ใบเลื่อย): long, serrated, strongly coriander-citrus leaves, at Thai and Vietnamese grocers (ngò gai). Flat-leaf parsley is not a substitute.
• Toasted rice powder (ข้าวคั่ว): dry-toast sticky or jasmine rice in a pan until deep golden, then pound to a gritty powder — or buy the ready-made packets (Lobo and similar) beside the larb kits in Thai grocers.
• Chilli (พริกป่น): Thai dried-chilli flakes with the seeds — coarser and hotter than UK supermarket flakes. Asian grocers stock it; don't reach for a paprika-led blend.
• Serving plate: sticky rice (soak, then steam) and the raw vegetables — cabbage, cucumber, Thai basil and lettuce (ผักกาดหอม), the leaves doubling as wraps for the beef. Isaan tables often add sour-bitter young leaves — ยอดมะกอก (olive shoots) and ผักติ้ว — but cabbage and cucumber are the easy London stand-ins.

Sources

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