Thai dishes · Central plains

Boat noodles.

Thailand wrote a standard for this bowl in 2565. It names nine aromatics, dark soy and fermented bean curd — and it does not mention blood anywhere.

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The short version

Thai script ก๋วยเตี๋ยวเรือ. TCPS 1614/2565 covers the instant version — a packet, not a bowl. Its broth clause names cinnamon, star anise, coriander seed, pepper, coriander root, galangal, garlic, pickled garlic and five-spice powder, plus dark soy sauce and fermented bean curd. Blood is not in the document. Dried noodle moisture is capped at 13 per cent and water activity at 0.85. The whole country has one current certificate holder, and it is in Nan.

01

Thailand standardised boat noodles, and only recently

The Thai Industrial Standards Institute, part of the Ministry of Industry, publishes the Thai Community Product Standard series — short specifications covering individual Thai foods. TCPS 1614/2565 is the boat noodle one. It was established anew rather than revised from an earlier document, after the sub-committee on food, beverages and non-food herbs resolved to create it at its meeting of 19 April 2565. It was announced on 20 May 2565 and signed by the Secretary-General of TISI in his capacity as chairman of the Community Product Standards Board, taking effect from the date of announcement.

Read clause 1.1 before anything else. The standard covers instant boat noodles, ready to prepare, packed in a container. Everything below describes a packet of dried noodles and a sauce, which is not the same object as the bowl in front of you at a shop. We will keep saying so, because the difference is where most confident wrong writing about Thai food comes from.

02

What the standard says is in it

Definition clause 2.1 assembles the product from parts, each of which the standard then defines separately:

ComponentWhat the standard says it is
Dried rice noodlesRequired. Rice milled with water, optionally with modified starch, tapioca flour, rice flour, tubers, vegetables or fruit; sheeted thin, steamed, cut to the width wanted, then dried
Spiced sauce liquidRequired. The aromatics in the table above, plus dark soy sauce and fermented bean curd, heated until thick. May carry a stabiliser and may be coloured
Chilli seasoning liquidOptional. Dried and fresh chilli, garlic and galangal ground fine with sugar, fish sauce and vinegar, heated until thick
Coconut milk powderOptional. Fresh coconut milk dried to a powder that reconstitutes in hot water
Other componentsOptional. The standard's examples are fried shallot, dried vegetables and dried meat

The interesting clause is 2.3, the broth. It names nine aromatics:

Named in clause 2.3Thai
Cinnamonอบเชย
Star aniseโป๊ยกั๊ก
Coriander seedเม็ดผักชี
Pepperพริกไทย
Coriander rootรากผักชี
Galangalข่า
Garlicกระเทียม
Pickled garlicกระเทียมดอง
Five-spice powderผงพะโล้

Two of the nine are worth stopping on. Pickled garlic is listed separately from ordinary garlic, so the standard treats that sour, slightly fermented note as a distinct thing the broth needs rather than a substitution. And five-spice powder — ผงพะโล้ — appears as an ingredient here, which quietly connects this bowl to the pha lo braise Thailand standardised separately, where the definition of that powder turns out to set five as a minimum rather than a list.

03

Blood is not in the document

The thing everyone knows about boat noodles is that the broth is darkened and thickened with pig’s blood. TCPS 1614/2565 does not mention blood. Not in clause 2.1, not in the broth definition at 2.3, not among the optional components at 2.4 and 2.5, not anywhere else in the document. We also searched the standards register for blood as a product and it returns nothing.

What that proves, and what it does not. This standard governs a dried instant product, and blood does not belong in a sauce sachet with a water activity ceiling of 0.85. So the honest statement is that Thailand’s only official description of boat noodles describes a product with no blood in it. It is not evidence that a bowl in a shop contains none. What a shop puts in its pot is outside this document, and we found no official source that describes it.

04

The numbers the standard sets

What is controlledThe limit
Moisture, dried noodle onlyNo more than 13 per cent by weight
Water activityNo more than 0.85, measured at 25 plus or minus 2 degrees Celsius
Total plate countNo more than 1,000,000 colonies per gram
SalmonellaMust not be found in a 25 gram sample
Staphylococcus aureusNo more than 100 colonies per gram
Bacillus cereusNo more than 1,000 colonies per gram
Clostridium perfringensNo more than 1,000 colonies per gram
E. coli (MPN)Fewer than 3 per gram
MouldNo more than 100 colonies per gram

Colours and preservatives are permitted here, at the types and amounts the law allows. That is worth noting because it is not the universal position in this scheme: the northern sausage standard bans every preservative and every synthetic colour outright. Where a standard permits and where it prohibits is a decision made per product, not a house style.

Colour, smell and flavour are judged by a panel of at least five people who assess independently on a three-point scale, and a batch fails if any one assessor gives any one characteristic the bottom score. Sampling is three containers from a batch, combined to at least 300 grams.

05

One certificate, and it is in Nan

TISI also publishes a register of producers currently certified against each standard. We queried it on 8 September 2026. Against TCPS 1614/2565 there is exactly one current certificate holder: a limited partnership registered in Mueang Nan district, Nan province, certified for instant boat noodles on 11 April 2568, valid until 10 April 2573, the certificate issued by the Nan Provincial Industry Office. Against the dried rice noodle standard, 730/2548, there is no current holder at all.

Boat noodles are a central-plains dish. Nan is in the far north, a long way from any of the canals the bowl is named after. That gap is real and we are not going to smooth it over with a theory: the register records who applied for a certificate, not where a dish is cooked or eaten. Certification here is something a small packaged-goods producer chooses to do. A noodle shop with four tables has no reason to, and the scheme was never aimed at one.

06

What we could not confirm, and did not invent

Honest gaps
  • The bowl itself. No standard defines boat noodles as a served dish. Nothing official names the pork or beef, the blood, the liver, the morning glory, the bean sprouts, the crisp pork rind or the basil, and nothing gives a proportion or a cooking time.
  • Why it is called a boat noodle. The standard uses the word and never explains it. The canal-vendor account and the explanation for the small bowl are widely repeated and we found no official source for either.
  • Whether shop broth contains blood. Outside every document we could find. Ask the shop.
  • Gluten. The noodle is rice, but dark soy sauce is in the broth definition and neither the standard nor the register addresses whether a given soy sauce is brewed with wheat.
  • Whether certification is compulsory for a seller. We could not confirm this from an official source for any dish in this series, and we are not going to assume it either way.
  • Any heritage listing. The Department of Cultural Promotion’s intangible cultural heritage portal at ich.culture.go.th still 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.
FAQ

Frequently asked questions

Is there a Thai government standard for boat noodles?

Yes, and it is recent. TCPS 1614/2565 covers ก๋วยเตี๋ยวเรือกึ่งสำเร็จรูป, instant boat noodles, with the English title Instant Rice Noodles, Kuaitiao Ruea. It was established anew - not as a revision of anything earlier - after the sub-committee on food, beverages and non-food herbs resolved at its meeting of 19 April 2565 to create it, and it was announced on 20 May 2565 by the Secretary-General of the Thai Industrial Standards Institute. Its scope is narrow and worth reading carefully: clause 1.1 covers instant, ready-to-prepare boat noodles packed in a container. It is a standard for the packet, not for the bowl a shop hands you.

What is actually in the boat noodle broth, according to the standard?

Clause 2.3 defines the spiced sauce liquid - น้ำซอสเครื่องเทศ, also called ซอสน้ำซุป - as spices and herbs in appropriate proportion, and it names nine: cinnamon, star anise, coriander seed, pepper, coriander root, galangal, garlic, pickled garlic and five-spice powder. To those it adds dark soy sauce and fermented bean curd, then heats the mixture until it thickens. A stabiliser is permitted and colouring is permitted. Two of those nine are worth pausing on. Pickled garlic is named specifically, distinct from ordinary garlic, so the standard is treating the sour note as structural rather than optional. And five-spice powder appears as an ingredient of the broth, which ties this bowl directly to the pha lo braise that Thailand standardised separately.

Does the Thai standard say boat noodles contain blood?

No - blood appears nowhere in TCPS 1614/2565. Not in the definition of the product, not in the definition of the spiced sauce liquid, not in the list of optional components. We want to be precise about what that does and does not prove. This standard covers the packaged instant version, which is dried noodles and a sauce sachet, and blood does not survive that format. So the correct reading is that Thailand's only official description of boat noodles describes a product with no blood in it - not that a bowl in a shop contains none. What the shop puts in its pot is outside this document entirely, and we found no official source that describes it.

What does the standard control besides the ingredients?

The numbers are mostly about keeping a dried product stable. Moisture in the dried noodle is capped at 13 per cent by weight and water activity at 0.85 - the standard adds a note explaining that water activity indicates the free water available for microbial growth, which is the mechanism it is managing. The microbiological ceilings are total plate count 1,000,000 per gram, Salmonella absent in 25 grams, Staphylococcus aureus 100 per gram, Bacillus cereus and Clostridium perfringens 1,000 per gram each, E. coli fewer than 3 per gram, and mould 100 per gram. Colours and preservatives are permitted at the types and amounts the law allows, which is a looser position than several other Thai dish standards take - the northern sausage standard, for one, bans both outright.

Where in Thailand is certified boat noodle product actually made?

One place, and it is not where you would guess. We queried the certificate register on 8 September 2026 and TCPS 1614/2565 has exactly one current holder: a limited partnership registered in Mueang Nan district, in Nan province in the far north, certified on 11 April 2568 with the certificate valid until 10 April 2573 and issued by the Nan Provincial Industry Office. Boat noodles are a central-plains canal dish associated with Ayutthaya and the canals north of Bangkok, several hundred kilometres away. This is a fact about who has applied for a certificate, and it is not evidence about where the dish is eaten or where it comes from. Certification in this scheme is something a small packaged-goods producer opts into; a noodle shop has no reason to.

Does the standard say anything about boats?

Nothing at all, which is a small disappointment and worth stating plainly. The word เรือ, boat, is in the product's name and in its English title, and the document never explains it, never mentions a canal, and never names Ayutthaya or anywhere else. TISI standards define composition and safety limits; they are not history. The widely repeated account is that the noodles were sold from boats on the canals and that the small bowl exists because a large one would spill when handed across water. We could not confirm that from any official source and are not going to present it as established.

Does it contain soy, and is it safe if I avoid gluten?

Soy, yes, and the standard effectively says so. Dark soy sauce and fermented bean curd are both in the broth definition, and the labelling clause 6.1(7) gives soy as its worked example of an allergen declaration, requiring the wording ข้อมูลสำหรับผู้แพ้อาหาร : มีผลิตภัณฑ์จากถั่วเหลือง on a product containing soy. Gluten is the harder question and this document does not answer it: the noodle itself is rice, but many dark soy sauces are brewed with wheat and the standard does not address what goes into the soy sauce. If you avoid gluten, the sauce is the thing to ask about, not the noodle.

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Sources & References

Sources & References

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.

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Kirby Scofield
By Kirby Scofield
Founder of BAANLYY · International real estate broker, investor & relocation specialist
Last updated 8 September 2026 · Last reviewed 8 September 2026
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