Method
- Make the broth: blanch pork bones for 5 minutes; rinse. Combine with 2L fresh water, bruised lemongrass and dried chilies. Simmer 60 minutes; strain.
- Make the topping: heat oil in a wide pan. Add garlic, shallots and ginger; fry 90 seconds. Add minced pork; cook 5 minutes until just browned.
- Add blended tomatoes, tomato paste and tua nao. Simmer for 20 minutes — the topping reduces to a thick, deeply red sauce. Add fish sauce, padaek and palm sugar.
- Bring the strained pork broth to a hot simmer. Adjust seasoning with fish sauce.
- Cook the rice noodles in unsalted water for 90 seconds; drain into deep bowls.
- Ladle hot broth over the noodles. Top each bowl with a generous spoonful of the tomato-pork sauce. Add bean sprouts, spring onion and a sprinkle of cilantro and mint. Each diner stirs the sauce into the broth before eating.
Common questions
Can Khao Soi Luang Prabang be made ahead?
Khao Soi Luang Prabang is best made and eaten the same day, but the components can be prepped earlier — chop and measure the ingredients up to a day ahead, refrigerated separately. Final cooking takes about 60 minutes.
Is Khao Soi Luang Prabang spicy?
Khao Soi Luang Prabang as written is mild to mildly warming — the heat comes from aromatics rather than chili. Add fresh sliced chili or chili oil at the end if you'd like to push it spicier.
Is Khao Soi Luang Prabang vegetarian or gluten-free?
This recipe is suitable for most diets. If you have specific restrictions, the substitutions section in each ingredient note covers the most common swaps.
How hard is Khao Soi Luang Prabang to make at home?
Khao Soi Luang Prabang sits at intermediate difficulty — total time about 90 minutes. The ingredients are not unusual but the timing requires attention.
Can Khao Soi Luang Prabang be scaled up or down?
This recipe is written for 4 servings. To scale, multiply each ingredient proportionally; the cooking times stay the same up to about double the volume. Beyond that, expect to cook in batches because of pan size and heat distribution.
Cultural Note
Khao soi Luang Prabang is unrelated to the Thai khao soi (which is curry-based with crispy noodles). The Lao version is tomato-based, with the meat-and-fermented-bean sauce on top of clear noodle soup. The dish is a Luang Prabang specialty; locals consider it the city's morning soup. The tua nao (fermented bean paste) is the signature flavour, distinguishing the dish from Vietnamese or Thai noodle soups. Bun Bun cha and Loi Heong are famous Luang Prabang khao soi specialty stalls, operating from 6 a.m. when locals queue for breakfast.
