Cao Lau: Hoi An's Yellow Noodle Dish You Can't Get Anywhere Else
Thick yellow noodles, char siu pork, shrimp, herbs, almost no broth — and you can only get the real thing in Hoi An. Here's why "cao lau" is worth the trip.
What makes cao lau different
"Cao lau" is a noodle dish from Quang Nam province, but you'll only find the authentic version in Hoi An. The noodles are thick, chewy, and yellow — not from turmeric or food coloring, but from lye water made with ash from a local tree. Traditionally, the rice is soaked in water from a specific ancient well in Hoi An, which locals insist gives the noodles their texture.
You get char siu-style pork ("xa xiu"), shrimp, fresh herbs (mint, basil, cilantro, lettuce), crispy croutons or pork cracklings, and just enough broth to moisten everything. It's not a soup — think dry noodle salad. The minimal broth lets each ingredient stand out instead of drowning in liquid.
The history: Chinese and Japanese traders, 17th-century Hoi An
Cao lau showed up in Hoi An in the 1600s, when the city was a major Southeast Asian trading port. Chinese and Japanese merchants brought their own noodle traditions — cao lau is essentially a fusion of those influences, adapted over time to Central Vietnamese tastes.
The name translates to "high floor" or "upstairs," supposedly because diners originally ate it on upper floors of shophouses, looking down at the street. Whether that's true or folklore, the name stuck.
Image by Christopher Crouzet via Wikimedia Commons (CC BY-SA)
Ingredients: why the noodles are yellow, and what else goes in
The noodles: Rice flour mixed with lye water (ash + water from a specific tree). The chemical reaction turns them yellow and gives them a firm, springy bite. Some vendors still swear by water from the Ba Le well in the Old Town, though modern cao lau shops use treated tap water with the same ash process.
Xa xiu pork: Marinated, slow-cooked, slightly sweet and savory. Cut into thin slices.
Shrimp: Usually boiled or sauteed, added whole or halved.
Herbs and greens: Mint, Thai basil, cilantro, lettuce. Fresh, not wilted.
Crispy bits: Either fried wonton strips or pork cracklings. Essential for texture.
Broth: Barely there — maybe 2-3 tablespoons of concentrated pork-shrimp stock, just enough to coat the noodles. This is not "pho".
Image by Steffen Schmitz (more photos) via Wikimedia Commons (CC BY-SA)
Where to eat cao lau in Hoi An
Cao lau is everywhere in Hoi An — street stalls, tourist restaurants, family kitchens. Here are three consistently good spots:
Quan Cao Lau Thanh (26 Thai Phien): Local favorite. Open early morning to mid-afternoon. Cash only. 30,000-40,000 VND per bowl.
Cao Lau Ba Le (45/3 Tran Hung Dao): Tiny shopfront, no English menu, excellent. Lunch and dinner. 35,000 VND.
Most Old Town restaurants: If you're eating at a sit-down place in the Ancient Town, they'll have cao lau on the menu. Expect 50,000-60,000 VND and slightly larger portions. Quality varies — look for places with a crowd of locals at lunch.
Street stalls along Tran Phu and Nguyen Thi Minh Khai also serve solid versions for 30,000-40,000 VND. If the noodles look pale white instead of yellow, walk away — that's not real cao lau.
How to eat it
Mix everything together before you take the first bite — noodles, pork, shrimp, herbs, crispy bits. The dish is designed to be tossed like a salad. Add lime juice (usually provided on the side) and chili sauce if you want heat. Some people add a splash of "nuoc mam", though the broth is already seasoned.
Don't expect slurpable soup. This is a dry noodle dish with just enough liquid to keep it from being bone-dry. If your bowl arrives swimming in broth, you're not eating cao lau — you're eating "mi Quang" with the wrong noodles.
Cao lau is Hoi An's signature dish for a reason: it's specific to this city, tied to the port's trading history, and genuinely different from anything else in Vietnam. Try it at a street stall first, then compare it to a restaurant version. You'll taste the difference in noodle texture and broth concentration.
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