Thai script ข้าวขาหมู; the braise is พะโล้. No Thai standard defines the dish — searching the register for ขาหมู returns nothing. What exists is TCPS 678/2547 for ผงพะโล้, five-spice powder, which requires at least five kinds of spice and offers six examples: cinnamon, star anise, cumin, coriander seed, pepper and clove. And TCPS 881/2548 for เป็ดพะโล้, the duck version, which does describe a finished braise: soy sauce and sugar, skin that must not tear, meat soft but not collapsing, and an instruction to reheat before eating.
Searching for the pork leg returns nothing
The Thai Industrial Standards Institute, part of the Ministry of Industry, publishes the Thai Community Product Standard series — a large body of short specifications covering individual Thai foods. We queried its register directly on 8 September 2026. Searching ขาหมู returns no standard at all. Nothing defines braised pork leg, the rice it is spooned over, the boiled egg, the pickled mustard greens, or the chilli-and-vinegar sauce beside it.
Searching พะโล้ returns two, and together they are the official record for this way of cooking: 678/2547 ผงพะโล้, the spice powder, and 881/2548 เป็ดพะโล้, boiled duck with Chinese five-spices. One defines the aromatic base; the other defines a finished braise, in a different animal. That is what there is, and it is more useful than it sounds.
Five-spice means at least five, and Thailand says so in writing
TCPS 678/2547 defines ผงพะโล้ as a product obtained by taking clean, dry spices in good condition of at least five kinds — อย่างน้อย ๕ ชนิด — grinding them together, optionally roasting them first, and optionally mixing in salt. It then gives six examples:
| Spice named in the standard | Thai |
|---|---|
| Cinnamon | อบเชย |
| Star anise | โป๊ยกั๊ก |
| Cumin | ยี่หร่า |
| Coriander seed | ลูกผักชี |
| Pepper | พริกไทย |
| Clove | กานพลู |
Six examples, and a required minimum of five kinds. In Thai law the five in five-spice is a floor, not a recipe. A blend of eight spices meets the standard exactly as well as a blend of five, and a producer may drop one of the six and add two others and remain compliant. There is no canonical Thai five-spice, and the document that would have to establish one explicitly declines to.
| What the standard controls | The requirement |
|---|---|
| How many spices | At least five kinds - a floor set by the definition clause, not a fixed list of five |
| Roasting | Optional. The spices may be roasted before grinding |
| Salt | Optional. May be mixed in |
| Appearance | A fine, dry powder that does not cake |
| Acid-insoluble ash | No more than 1 per cent by weight - the grit and sand test |
| Moisture | No more than 10 per cent by weight |
| Total plate count | No more than 100,000 colonies per gram |
| E. coli (MPN) | Fewer than 3 per gram |
| Yeast and mould | No more than 100 colonies per gram |
The acid-insoluble ash ceiling of 1 per cent is the interesting one. It is the standard test for grit, sand and dirt carried through from drying spices on the ground — a quality problem specific to the way this powder is made, being managed by a number.
What the duck standard says a pha lo braise should be
TCPS 881/2548, เป็ดพะโล้, is the only standard we found that describes a finished pha lo dish. Its definition is short: trimmed duck boiled with water and เครื่องพะโล้, pha lo spices, seasoned with seasonings such as soy sauce and sugar, packed, then frozen or chilled — and it states plainly that the product must be reheated before eating. Its scope clause covers only product kept frozen or chilled and transported temperature-controlled.
What makes it worth reading is the quality clauses, because they are a government describing the texture of a good braise. Clause 3.1: the skin must not peel away or tear. Clause 3.4: the texture must be soft, and not chewy, mushy or falling apart. A five-person expert panel scores each of those, plus colour and flavour, from four down to one. On the safety side Staphylococcus aureus must not be detected in a 1 gram sample and coliforms must be under 3 per gram by the MPN method.
The limit of reading across. This is a duck standard. It tells you what Thailand considers a correctly executed pha lo braise, and its seasoning clause is the closest official statement that the braise is built on soy sauce and sugar. It does not govern pork, and we are not going to say it does.
What we could not confirm, and did not invent
- The dish itself. No standard defines khao kha moo. Nothing official names the pork leg, the rice, the egg, the pickled greens, the coriander or the chilli-vinegar sauce.
- Proportions and timings. Neither standard gives a quantity, a braising time or a temperature, so there is no official answer to how long a leg should cook.
- Whether it contains gluten. Soy sauce is named in the duck standard; whether a given soy sauce is brewed with wheat is not addressed by either document. If you avoid gluten, ask about the sauce rather than the spice.
- Star anise as compulsory. It is one of six examples in a definition requiring at least five kinds. A compliant pha lo powder need not contain it.
- The Chinese origin. The standard’s own English title is Chinese five-spice powder, which is a translation choice by TISI rather than a historical finding. We make no claim beyond reporting the title.
- Any heritage listing. The Department of Cultural Promotion’s intangible cultural heritage portal at ich.culture.go.th does not resolve, so we make no claim in either direction.
- Prices, and where to eat it. No official source for either, and we do not name restaurants we cannot verify.
Frequently asked questions
Pha lo is the sweet, dark, aromatic braise that khao kha moo is cooked in, and Thailand publishes a standard for the spice powder it starts from. TCPS 678/2547 defines ผงพะโล้, five-spice powder, as a product obtained by taking clean, dry spices in good condition of at least five kinds - such as cinnamon, star anise, cumin, coriander seed, pepper and clove - and grinding them together, optionally roasting them first and optionally adding salt. The standard's English title is Chinese Five-Spice Powder. It requires a fine dry powder that does not cake, caps moisture at 10 per cent by weight and acid-insoluble ash at 1 per cent, and sets microbiological ceilings. What it does not do is define the braise, the pork, the soy, the sugar or the egg.
No, and this is the detail worth taking away. The definition clause of TCPS 678/2547 requires spices of at least five kinds - อย่างน้อย ๕ ชนิด - and then gives six examples: cinnamon, star anise, cumin, coriander seed, pepper and clove. So in Thai law the five in five-spice is a minimum, not a recipe. A powder built on eight spices meets the standard exactly as well as one built on five. The six named are examples the standard offers rather than a required set, which means a producer may leave one out and add two others and still be compliant. If you were expecting a fixed canonical blend, the government's own document says there is not one.
No. We searched the register for ขาหมู, pork leg, on 8 September 2026 and it returns nothing at all. No published community product standard defines braised pork leg, the rice under it, the boiled egg, the pickled mustard greens beside it or the chilli-and-vinegar sauce. What Thailand has standardised in this family is the spice powder, TCPS 678/2547, and one finished dish that uses it: TCPS 881/2548, boiled duck with Chinese five-spices. The duck standard is useful precisely because it is the closest official description of what a pha lo braise produces, but it is a duck standard and we are not going to pretend it governs pork.
More than you would expect, because it describes the finished product rather than an ingredient. TCPS 881/2548 defines pet pha lo as trimmed duck boiled with water and pha lo spices, seasoned with seasonings such as soy sauce and sugar, packed, then frozen or chilled - and states in the definition that it must be reheated before eating. Its quality clauses are about texture and appearance: the skin must not peel away or tear, and the meat must be soft, neither chewy nor mushy nor falling apart. Its microbiology is strict for a cooked meat product - Staphylococcus aureus must not be detected in a 1 gram sample and coliforms must be under 3 per gram by the MPN method. Read across, that is a government describing what a good pha lo braise looks like: intact skin, meat that yields without collapsing, and soy and sugar doing the seasoning.
Soy, almost certainly. Soy sauce is named in the seasoning clause of the duck standard, and a pha lo braise is built on it. The five-spice powder standard itself names only spices and optional salt, so the powder is not a soy product - but the dish is. Wheat is a live question we cannot answer from these documents: many soy sauces are brewed with wheat and neither standard addresses it, so if you avoid gluten the sauce is the thing to ask about rather than the spice. Neither standard names shellfish. And neither standard applies to a shop braising pork legs in a pot at the front of the stall, which is what you are almost always buying.
The register barely answers this, and we would rather say so than build a story on one row. On 8 September 2026 it returned exactly one current certificate holder against the five-spice powder standard: an individual producer in Mueang Lamphun district, Lamphun, in the north. The duck standard has no current holder at all. One certificate is not a geography. What it does tell you is that this is a domestic, everyday product few producers see any reason to certify - which is generally true of spice blends in this scheme. The dish's Chinese origin is widely stated and is entirely plausible given the standard's own English title, Chinese five-spice powder, but that title is a translation choice rather than a historical claim, and we make no assertion beyond it.
Related guides
- Khao man gai — the other one-plate rice dish, where Thailand standardised the sauce and nothing else.
- Sai ua — the northern sausage, whose standard bans every preservative outright.
- Khao soi — the northern noodle bowl, and the curry powder written into its standard.
- Thai street food — how ordering actually works.
- Thai regional food — how the four regional kitchens differ.
- Dining in Chiang Mai — the northern city nearest the one certified five-spice producer.
- Living in Bangkok — where this plate is on almost every corner.
- Food delivery apps — how the same plate reaches a condo in fifteen minutes.
Eating this well for this little is a real part of the arithmetic
If the food is what started this, the next question is what a month in Chiang Mai or Bangkok actually costs.
Sources & References
- Thai Industrial Standards Institute, Ministry of Industry - Thai Community Product Standard TCPS 678/2547, Chinese Five-Spice Powder (Phong Pha Lo). Its definition clause 2.1 describes a product obtained by taking clean, dry spices in good condition of at least five kinds, such as cinnamon, star anise, cumin, coriander seed, pepper and clove, and grinding them together, optionally roasting them first and optionally adding salt. It requires a fine dry powder that does not cake, caps acid-insoluble ash at 1 per cent by weight and moisture at 10 per cent by weight, and sets microbiological ceilings of 100,000 colonies per gram total plate count, fewer than 3 E. coli per gram by the MPN method and 100 colonies per gram of yeast and mould
- Thai Industrial Standards Institute - Thai Community Product Standard TCPS 881/2548, Boiled Duck with Chinese Five-Spices (Pet Pha Lo). Its scope clause 1.1 covers only product kept frozen or chilled and packed and transported in temperature-controlled containers. Its definition clause 2.1 describes trimmed duck boiled with water and pha lo spices, seasoned with seasonings such as soy sauce and sugar, packed, then frozen or chilled, and states that it must be reheated before eating. Clause 3.1 requires the skin not to peel away or tear and clause 3.4 requires the texture to be soft, neither chewy, mushy nor falling apart. Clause 3.7.2 requires Staphylococcus aureus not to be detected in a 1 gram sample
- Thai Industrial Standards Institute - the public register of published community product standards, queried directly on 8 September 2026. Searching pha lo returns exactly two standards: 678/2547 Chinese five-spice powder and 881/2548 boiled duck with Chinese five-spices. Searching kha moo, pork leg, returns no standard at all, so no published community product standard defines khao kha moo, the braised pork leg on rice
- Thai Industrial Standards Institute - the public register of certified community producers, queried directly on 8 September 2026. Against TCPS 678/2547 it returns exactly one current certificate holder, an individual producer in Mueang Lamphun district, Lamphun, certified for five-spice powder. Against TCPS 881/2548 for boiled duck it returns no current certificate holder
Primary and official sources are cited above. Government rules, fees and procedures in Thailand change over time and vary by office; always confirm current requirements with the relevant authority before relying on them. BAANLYY never takes paid placement in editorial content.
