Cao lau: a noodle dish unlike anything else in Vietnam
Cao lau is a noodle dish from Hoi An, in central Vietnam, made with thick chewy rice noodles, sliced barbecue-style pork, crispy rice crackers, fresh herbs, and just enough broth to coat everything. It does not taste like pho, it does not taste like any other Vietnamese noodle dish, and it does not closely resemble Chinese or Japanese food either — even though influences from both are visible in the bowl. It is something entirely its own.
The dish is closely associated with Hoi An’s history as a major trading port, and locals consider it a symbol of the town. The Huffington Post once called it Vietnam’s greatest culinary treasure, and it has been recognized by the Asian Records Organization as a dish of significant culinary value in Asia. Whether those titles mean much is debatable, but the sentiment is not wrong: cao lau is genuinely special.
Most people eat it for breakfast or lunch. It is a light but satisfying meal, and you will find it at small family-run restaurants and street-side stalls throughout the old town and surrounding streets.
What is in cao lau
The heart of the dish is the noodles. Cao lau noodles are thick, firm, and slightly chewy — closer in texture to Japanese udon than to the soft rice noodles used in pho or bun bo Hue. They get their distinctive yellowish-brown color from being soaked in lye water made from the ash of trees found on the Cham Islands, near Hoi An. According to local tradition, the water used to make them must come from the ancient Ba Le well in Hoi An — which is part of why authentic cao lau is almost impossible to find outside the town.
On top of the noodles sits sliced pork, marinated in soy sauce, five-spice, garlic, and sugar, then fried or roasted until tender and slightly caramelized. Some of the raw noodles are also cut into small squares and deep-fried until crispy, and these crackers are added on top for texture. A handful of fresh herbs — typically mint, basil, lettuce, and bean sprouts — goes in alongside, and the whole bowl is finished with a small splash of savory pork broth. Not enough to make it a soup, just enough to bring everything together.
The taste is hard to compare to anything else. It is savory and slightly smoky from the pork, fresh from the herbs, and has a satisfying contrast between the chewy noodles and the crispy crackers. The broth adds depth without dominating. Everything is served at room temperature, which is intentional — the dish is meant to be mixed together and eaten slowly, not slurped hot.
A shrimp version exists at some places, but pork is the standard. Some restaurants also offer a vegetarian version, though this is less common and not always available.
Allergy concerns for cao lau
Cao lau contains several common allergens worth knowing about before you order:
- Gluten — the pork marinade typically contains soy sauce, which is made from wheat. The noodles themselves are rice-based, but gluten cross-contamination is possible in small kitchens.
- Soy — soy sauce is a core part of the marinade and is sometimes added as a condiment at the table.
- Pork — the standard version of the dish is built around pork. There is no beef or chicken alternative at most places.
- Shellfish — some restaurants offer a shrimp variation. If you have a shellfish allergy, confirm which version you are being served before eating.
- Vegetarian — a small number of restaurants offer a vegetarian version of cao lau, but it is not widely available. Do not assume it is on the menu without checking first.
For a full overview of eating in Vietnam with dietary restrictions or food allergies, including useful Vietnamese phrases to communicate your needs, see our guide to travelling in Vietnam with food allergies.
The origins of cao lau
Hoi An was one of the most important trading ports in Southeast Asia between the 15th and 17th centuries. Merchants from China, Japan, India, Persia, and Europe all passed through, and the town absorbed influences from all of them — in its architecture, its culture, and its food. Cao lau emerged from that environment, and its origins reflect exactly how mixed that history was.
Nobody agrees on where the dish actually came from, and there are three main theories.
The first points to the Champa kingdom, which ruled this region long before the trading era. The noodles are traditionally made using water from the Ba Le well, a structure built during Champa times that still stands in Hoi An today. Locals and noodle makers insist the groundwater from this specific well gives cao lau noodles their authentic taste, and that the dish cannot be properly replicated without it. Whether that is literally true or more of a legend passed down through generations is hard to say — but it is a story worth knowing.
The second theory credits Chinese immigrants, who settled in Hoi An in large numbers during its trading peak. The use of char siu-style pork and soy sauce in the marinade are clear Chinese influences, and some believe the dish was adapted from Chinese noodle traditions. The Chinese community in Hoi An, however, does not claim it as their own.
The third theory draws a comparison to Japanese udon, pointing to the thick, chewy shape of the noodles. Japanese merchants had a significant presence in Hoi An, and some food historians have suggested the noodle style may have come from them. The Japanese community in Hoi An also disputes this, and one researcher noted that cinnamon — used in cao lau’s spice blend — does not appear in traditional Japanese savory cooking.
The name adds another layer. “Cao lau” translates roughly to “high floor” in Vietnamese, most likely referring to the elevated upper floors of the old shophouses along the river, where wealthy merchants would eat while keeping an eye on their goods below. An alternative interpretation from the Sino-Vietnamese reading of the characters suggests it means something closer to “wooden noodles,” referring to the wood ash used in the lye water.
The honest answer is that cao lau is probably a product of all these influences at once — shaped over centuries in a town where cultures constantly overlapped. The lack of a clear origin story is not a gap in the history. It is part of what makes the dish interesting.
Where to eat cao lau
Naming the best cao lau restaurant in Hoi An is difficult, and anyone who does so with complete confidence is probably oversimplifying. Every family-run spot has its own take on the dish — slightly different pork preparation, different herb combinations, different ratios of broth. What one person considers the best, another finds unremarkable. The places listed below are well-known, consistent, and worth visiting, but the best cao lau restaurant for you might just as easily be a plastic-stool stall on a side street with no Google listing, no reviews, and a queue of locals out front. Keep your eyes open as you walk around.
Cao Lau Thanh — 26 Thai Phien
A small, family-run spot that has been serving cao lau for over 20 years. It sits just outside the old town core and draws a loyal local following. The noodles are handmade, the pork is well-seasoned, and the bowl is put together with care. Nothing flashy — just a consistent, honest plate of cao lau at a fair price. One of the more reliable choices in town.
Cao Lau Ba Le — 49/3 Tran Hung Dao
Tucked down a narrow alley in the old town, this is one of the more well-known spots among both locals and travelers. The noodles are traditionally made using ash water and prepared according to a family recipe that has been passed down through generations. The pork is tender and properly seasoned, and the crispy toppings add good texture. It is slightly harder to find than other places, but worth the short walk down the alley.
Cao Lau Lien — 120 Tran Cao Van
This is a sidewalk stall that operates in the afternoon, and it is about as local as it gets. Prices are among the lowest in town, the setting is minimal, and the focus is entirely on the food. The noodles come from one of the oldest noodle factories in Hoi An, and the sauce is made in-house. If eating at a proper table in a proper restaurant is not a requirement, this is one of the more authentic experiences available.
Cao Lau Khong Gian Xanh — 687 Hai Ba Trung
Set in a small alley, this is a cozy spot with a slightly more relaxed atmosphere than most cao lau stalls. One of the few places that reliably offers a vegetarian version of the dish, which makes it a practical choice for non-meat eaters. The standard cao lau here is solid — fresh noodles, good pork, well-rounded flavors. Not the most memorable bowl in town, but a dependable option.
Cao Lau Di Hat — 69 Phan Chu Trinh
Aunty Hat has been making cao lau at this spot for over 55 years, which is reason enough to visit. The setup is basic — plastic chairs, a small streetside table — and the place has almost no online presence. That is part of the point. The food is simple and focused, the price is very low, and the experience feels genuine in a way that some of the more well-known spots no longer do.
Tips for eating — and finding the best cao lau restaurant
Eat it for breakfast or lunch
Cao lau is a morning and midday dish. Most locals eat it for breakfast or lunch, and many of the better spots stop serving by early afternoon. Some close as early as 2pm. If you are planning to eat cao lau for dinner, you will find fewer options and the noodles are less likely to be freshly made that day. Go early when possible.
Always mix the bowl before eating
Cao lau is not a soup. When it arrives, the noodles, pork, herbs, crackers, and broth are layered separately in the bowl. Mix everything together before taking your first bite. This is how locals eat it, and it is the only way to get the full balance of flavors and textures in each mouthful.
Customize to your taste
The bowl that arrives is a starting point. Most places will have chili paste, fresh lime, fish sauce, and soy sauce on the table. A squeeze of lime brightens the whole dish. A spoonful of chili paste adds heat. Fish sauce or soy sauce deepens the savory flavor. Adjust as you go — there is no wrong way to season it.
What to expect to pay
Cao lau is an affordable dish by any standard. At a local stall, expect to pay around 20,000 to 35,000 VND per bowl (roughly 1 to 1.50 USD). At a sit-down restaurant in or near the old town, prices range from 35,000 to 50,000 VND (1.50 to 2 USD). Anything significantly above that is tourist pricing. The price of the bowl has almost no relationship to its quality.
A busy place is usually a good place
The best signal that a cao lau spot is worth trying is a full house — particularly if most of the customers are local. High turnover means the ingredients are fresh and the noodles have not been sitting around. A quiet restaurant with no locals at lunchtime is a reason to keep walking.
How to find cao lau on Google Maps
Search “cao lau” directly in Google Maps while in Hoi An and filter by rating and distance. The Vietnamese spelling is cao lầu, but the non-accented version works fine in search. Highly rated spots in the old town area tend to attract more tourists, which is not necessarily a problem, but the stalls slightly outside the tourist center — on streets like Thai Phien or Tran Cao Van — are often better value and more local in feel.
Pork or shrimp
The standard version of cao lau uses pork, and this is what most places serve. A shrimp version exists at some restaurants, but it is far less common and not considered the traditional preparation. If you have a preference either way, check before ordering — menus at smaller stalls are sometimes verbal only, and it is worth asking.
Try it as part of a food tour
Eating cao lau on its own is great. Eating it as part of a guided street food tour is a different experience entirely. A good local guide will take you to spots you would not find on your own, explain what you are eating and why it matters, and give you context that makes the food more interesting. Local Vietnam runs street food tours in Hoi An that include cao lau alongside other dishes worth trying in the town. It is one of the better ways to eat well and learn something at the same time.
Cao lau outside Hoi An
You will occasionally see cao lau on menus in Hanoi, Ho Chi Minh City, and other parts of Vietnam. It is worth knowing that it is almost never the same dish. The noodles used outside Hoi An are made without the Ba Le well water and without the Cham Island ash, which changes both the texture and the flavor noticeably. Whether that is purely legend or genuinely affects the taste is debatable, but the practical reality is that cao lau made outside Hoi An tends to fall flat compared to the original. If you are curious about the dish, eat it in Hoi An — that is the only place where it makes full sense.
For more dishes worth trying in Hoi An, practical tips on eating street food safely, and advice on finding the best local spots wherever you are, see our complete guide to street food in Hoi An.
Other regional Vietnamese dishes
Cao lau is a good example of something that makes Vietnamese food genuinely interesting to explore: dishes that exist in one place, reflect a very specific local history, and cannot really be replicated anywhere else. Vietnam has many more of them — not the well-known staples that appear on every tourist menu, but dishes with a strong identity tied to a particular city, region, or community that most travelers never get around to trying.
- Cha Ca — a Hanoi specialty of turmeric-marinated fish pan-fried at the table with dill and spring onions, served with rice noodles and shrimp paste.
- Bun Bo Hue — a spicy, lemongrass-infused beef noodle soup from Hue that is bolder and more complex than pho.
- Mi Quang — a Quang Nam noodle dish with turmeric-yellow noodles, minimal broth, and a mix of pork, shrimp, and roasted peanuts.
- Com Ga Hoi An — Hoi An’s version of chicken rice, made with fragrant turmeric-tinted rice and shredded chicken, distinct from versions found elsewhere in Vietnam.
- Banh Trang Nuong — a grilled rice paper snack from Da Lat, topped with egg, spring onions, and dried shrimp, often called Vietnamese pizza.
- Bun Dau Mam Tom — a northern Vietnamese dish of rice vermicelli and fried tofu served with mam tom, a pungent fermented shrimp paste that divides opinion.
- Bo Ne — a sizzling breakfast dish of pan-fried beef, eggs, and pate served on a cast-iron skillet, most popular in southern Vietnam.
For a broader look at what Vietnamese cuisine has to offer across the country, the Vietnamese food guide is a good place to start.
