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Cao Lau
Vietnamese Cuisine ↗

Cao Lau

★★★★4.5· 143 ratings
·Serves 2
About this Dish

A Hoi An speciality — thick chewy noodles with char siu pork, bean sprouts and crispy rice crackers in a light broth.

History & Origin

Cao lau is the most mysterious dish in Vietnamese cuisine — a noodle dish that can only be made authentically in Hoi An, using water drawn from a specific ancient well (Ba Le Well) and ash from trees on the Cham Islands. The noodles are treated with the ash water, giving them a distinctive grey colour and uniquely chewy texture that cannot be replicated elsewhere. The dish reflects Hoi An's extraordinary history as a trading port where Japanese, Chinese and Vietnamese cultures intersected — the noodles show Japanese influence, the char siu pork shows Chinese influence, and the fresh herbs show Vietnamese tradition. Local vendors guard the well water recipe fiercely.

IngredientsServes 2
🍜Cao lau noodles (or thick udon), 400g
🐷Char siu pork, sliced, 300g
🫘Bean sprouts, 100g
🥬Fresh greens (rau muong or lettuce)
🌿Fresh herbs — mint, coriander, basil
🍚Crispy rice crackers
🫙Soy sauce, 2 tbsp
🍶Sesame oil, 1 tsp
🧅Spring onions, sliced
🌶️Chilli sauce, to serve
Method
1
If using udon as a substitute, cook according to packet instructions then toss in a little soy sauce and sesame oil.
2
Slice the char siu pork thinly. Prepare all the garnishes — fresh herbs, bean sprouts, sliced spring onions.
3
Briefly blanch the noodles in boiling water. Drain well.
4
Toss the noodles with soy sauce, sesame oil and a little of the char siu marinade.
5
Divide into bowls and top with the sliced char siu pork, bean sprouts and fresh greens.
6
Add crispy rice crackers for texture, fresh herbs and a small amount of broth on the side. Cao lau is intentionally drier than other noodle soups.
What Makes it Authentic

Authentic cao lau noodles are made with water from a specific Hoi An well and ash from a specific island — giving them their unique grey colour and chewy texture.

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Andrea explains the history of cao lau noodles being made with water from a specific well ...
Helen's Recipes (Vietnamese Food)
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