Cao Lau Hoi An, Hoi An Noodles
Cao lau is the dish Hoi An is proudest of, and it is not a soup: thick, chewy noodles are served almost dry, with just a spoonful of rich braised-pork sauce, slices of five-spice pork, crisp bean sprouts, lettuce and a pile of fresh herbs, plus crunchy rice crackers on top. The noodles are made with lye water, which gives them their firm bite and pale yellow colour, and the pork is marinated in soy sauce and five-spice the way Chinese char siu is. One serving is about 350 g.
Cao lau is Hoi An's signature dish, and its story is the story of the old trading port itself. The thick noodles are made with lye water, traditionally said to use water from the ancient Ba Le well and ash from trees on the nearby Cham Islands, which gives them their firm, springy chew. The five-spice pork carries Chinese roots, the noodles echo Japanese udon, and the pile of fresh herbs is Vietnamese — a blend that grew out of the Chinese and Japanese merchant communities who traded in Hoi An from the 17th century. The name is often explained as 'high floor', from the upper floors of merchant houses where the dish was served.
Pairs well with: A small bowl of chilli sauce and a glass of iced tea, with extra herbs on the side.
Provenance
Vietnam
Hoi An Heritage
East & South Asia
Time Dedication
1h 5m
30m prep • 35m cook
Batch Yield
4 Servings
448 kcal per serving
1 serving ≈ 350 g
Technical Skill
Intermediate
Medium (Marinated Pork)
Meal Timing & Digestive Fit
Breakfast
Not Advised
Lunch
Prime Metabolic Fit
Dinner
Ideal Hearty Main
Snack & Tea
Inappropriate
Hoi An Heritage
Photo: Chainwit., CC BY 4.0, via Wikimedia Commons
The Heritage Formulary
Estimated cost: Medium — about $4–5 per serving at home (USD)
Made the Hoi An way: five-spice pork marinated in soy sauce, seared and braised, served over thick chewy noodles with only a little sauce, fresh herbs and crispy crackers.
Execution Methodology & Culinary Technique
Prep Stage: Pork Marinade & Herbs
30 Mins • Marinating, Washing & Measuring
Mix the soy sauce, sugar, crushed garlic and five-spice into a marinade and coat the pork loin, leaving it for at least 30 minutes. While it marinates, wash and tear the lettuce, pick the herbs, rinse the bean sprouts and slice the spring onions.
Maestro Tip: Give the pork the full 30 minutes — the marinade is the only seasoning the meat gets.
30 Mins No heat — marinating
Mix the soy sauce, sugar, crushed garlic and a pinch of five-spice powder in a bowl. Rub the marinade all over the pork loin, cover, and leave it at room temperature for 30 minutes.
Turn the pork once halfway through so the marinade reaches every side.
Done when: Pork evenly coated, marinade absorbed into the surface.
20 Mins Medium-high heat, ~190°C (375°F), then low simmer
Heat the oil in a pan over medium-high heat and sear the pork for 3 minutes on each side until browned. Pour in the pork broth, turn the heat down low, cover, and simmer gently for 12 to 15 minutes until the pork is cooked through. Lift the pork out and keep the braising liquid hot.
Sear hard first — the brown crust is where the flavour lives.
Done when: Pork browned outside, no pink inside, and the thickest part at 71°C (160°F); braising liquid dark and savoury.
8 Mins Boiling water, 100°C (212°F)
Bring a large pot of water to a rolling boil and cook the noodles until just tender and chewy, about 5 to 6 minutes for fresh noodles. In the last 30 seconds, drop in the bean sprouts. Drain well and rinse briefly with hot water.
Do not overcook — cao lau noodles should be firm and springy, not soft.
Done when: Noodles tender with a firm, chewy bite; sprouts just wilted.
3 Mins No heat — slicing
Rest the pork for 3 minutes, then slice it thinly across the grain. Spoon a little of the hot braising liquid over the slices to keep them moist.
Slice across the grain and keep the slices thin — thick slices are tough.
Done when: Thin, even slices, still glossy with braising liquid.
4 Mins No heat — plating
Divide the noodles between four bowls. Lay the pork slices on top, spoon over just 2 to 3 tablespoons of the hot braising liquid per bowl — this is not a soup — then add the lettuce, herbs, bean sprouts, spring onions and crispy rice crackers.
Little broth is the point: too much turns cao lau into a noodle soup, which it is not.
Done when: Noodles glossy with a little sauce, pork and herbs piled on top, crackers crisp.
Finishing Touches & Plating
Serve at once with lime wedges and chilli sauce on the table. Toss everything together in the bowl before eating, so the noodles pick up the sauce and the crackers stay crisp against the herbs.
Nutritional Physiology & Benefits
Energy
448
kcal / serving
Protein
26g
Complete AA
Carbs
58g
Complex
Fats
12g
Healthy
| Energy | 448 kcal |
| Protein | 26 g |
| Carbohydrates | 58 g |
| Fat | 12 g |
| Fibre | 3.5 g |
| Sugar | 5.7 g |
| Sodium | 994 mg |
| Energy | 128 kcal |
| Protein | 7.5 g |
| Carbohydrates | 16.6 g |
| Fat | 3.3 g |
| Fibre | 1 g |
| Sugar | 1.6 g |
| Sodium | 284 mg |
Nutrition values are estimated — calculated from USDA FoodData Central values for the listed ingredients.
Vitamins & minerals: The pork and noodles supply B vitamins and iron, the bean sprouts and herbs add vitamin C and vitamin K, and the lettuce adds folate.
Herbs and Greens in Every Bowl
Lettuce, mint, basil and bean sprouts bring fibre, vitamin C, vitamin K and folate to a bowl that is mostly noodles and pork.
Protein That Fills You Up
One serving carries about 26.2 g of protein from the pork, which is what makes a bowl of noodles a proper lunch rather than a snack.
Light on Broth, Big on Flavour
Because cao lau is served almost dry, the flavour comes from the marinade and the herbs rather than a bowl of salty broth, so the bowl feels lighter than a soup noodle.
Food Pairings
To optimize nutrient absorption and elevate the sensory depth, pair with these authentic accompaniments:
Drinks
Iced Tea
Cold, unsweetened iced tea is the everyday drink with cao lau in Hoi An because its chill and mild bitterness balance the rich, five-spice pork.
Vegetables
Extra Herbs & Lettuce
More mint, basil and lettuce are always welcome — their cool, peppery freshness is the contrast the warm pork and chewy noodles need.
Sides
Chilli Sauce
A spoonful of chilli sauce on the side lets each person add heat to their own bowl without changing the dish for everyone else.
Soups
Clear Vegetable Soup
A light, clear soup with greens gives a warm, mild counterpoint to the dry noodle bowl, and it turns the lunch into a full meal.
Full Menus
Fresh Spring Rolls & Fruit
Start with a fresh spring roll and finish with sliced mango or dragon fruit — light at both ends, with the rich noodle bowl in the middle.
Complete menu
Serve cao lau with a fresh spring roll and iced tea, then finish with sliced mango or dragon fruit.
Digestive Guardrails
To prevent digestive distress, sluggishness, or palate clash, avoid pairing the dish with these elements:
Drowning the Bowl in Broth
Cao lau is served with only a few spoonfuls of sauce, so adding a full ladle of salty broth makes the bowl far too salty at about 995 mg sodium per serving already. This is general food information, not medical advice.
Undercooked Pork
Pork loin must be cooked right through, so always check the thickest part before slicing — pink, undercooked pork is not safe to eat. This is general food information, not medical advice.
General information only, not medical advice — consult a doctor for personal dietary decisions.
Who Should Eat It
Health Conditions — Adjust or Avoid
If you have a medical condition, consult your doctor before changing your diet.
Storage & Use
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Immunity & Warming
Slow-simmered bone broth with rice noodles, rare beef and fresh herbs.
Vietnam
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Fresh rice paper rolls filled with poached prawns, tender pork, rice vermicelli, lettuce, herbs and carrot, served with a peanut dipping sauce.
Light Digestion
Nothing is fried, so the rolls stay light and fresh — a cool, herb-filled snack for hot days.
Vietnam
1h 45m
Pork belly slowly braised in coconut water and caramel until meltingly tender, with golden eggs that soak up the sweet-savoury sauce — the Vietnamese family dish that tastes better the next day.
Comfort & Sustained Energy
Slow-braised pork belly and eggs in coconut water and caramel.
Vietnam
1h 10m
WARNING: This dish is made from raw duck blood and eating it is NOT recommended. Raw blood can carry Streptococcus suis (which causes meningitis and sepsis — people in Vietnam have died after eating pig-blood tiet canh), avian influenza from duck blood, salmonella and other dangerous germs. Vietnam's Ministry of Health advises against eating tiet canh, and no preparation method — not even blood from a fresh or trusted source — makes raw blood fully safe. This page describes the traditional Hanoi preparation, tiết canh vịt, for cultural knowledge only. One serving is about 241 g: a small bowl of fresh duck blood mixed with fish sauce, poured over finely chopped cooked duck meat and left to set into a soft, trembling jelly, then finished with crushed roasted peanuts, fresh herbs, lime and chili, and served cold.
Cultural Discovery
A traditional northern Vietnamese snack of raw duck blood set into a soft jelly with cooked duck meat, herbs and peanuts — described here for cultural knowledge, with a serious safety warning.
