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Vietnamese

Bún riêu

A Vietnamese rice noodle soup with a tomato-red crab broth, soft riêu curds, fried tofu, herbs, and a savory depth from mắm tôm. The crab is pounded and strained so it gently sets into delicate rafts in the broth.

Bún riêu — Vietnamese — ChefSnap
35 minsPrep
1 hr 15 minsCook
6Serves
MediumDifficulty
620 kcal per serving38g protein 68g carbs 24g fat

Ingredients

Method

  1. Blanch the pork neck bones in boiling water for 3 minutes, rinse them clean, then simmer with 4 cups fresh water for 45 minutes, skimming occasionally.
  2. Remove the crab carapaces, scoop out and reserve any crab roe or fat, discard the gills and aprons, and pound or blend the crab bodies with the salt.
  3. Stir 2 cups water into the pounded crab, strain through a fine sieve or cloth into a pot, and squeeze well to extract the crab liquid; discard the shells.
  4. Warm the strained crab liquid over medium-low heat, stirring gently for the first few minutes, then stop stirring and let the crab solids rise and set into soft curds without boiling hard.
  5. Lift the crab curds into a bowl, then strain the pork bone broth into the crab broth base.
  6. Mix the crab curds gently with the minced pork, egg, and pounded dried shrimp to make the riêu mixture.
  7. Heat the annatto oil in a small pan, fry the shallots until fragrant, add the reserved crab roe and tomato wedges, and cook until the tomatoes soften but still hold their shape.
  8. Stir the mắm tôm into the tomato mixture, then add everything to the broth pot.
  9. Season the broth with fish sauce, sugar, and giấm bỗng, then bring it to a gentle simmer.
  10. Spoon the riêu mixture into the simmering broth in large clumps and cook gently for 8 to 10 minutes until set.
  11. Add the fried tofu puffs and pork blood cubes, then simmer for 5 more minutes and adjust seasoning with extra fish sauce or vinegar if needed.
  12. Cook the rice vermicelli according to the package directions, rinse briefly, and divide between 2 serving bowls.
  13. Ladle the hot broth, riêu, tofu, pork blood, and tomatoes over the noodles, then top with scallions and cilantro.
  14. Serve immediately with the mixed herbs and vegetables, lime wedges, sliced chile, and extra mắm tôm on the side.

Common questions

What can I substitute for fresh field crabs (cua đồng) if I can't find them?

Use a mix of shrimp paste broth plus extra dried shrimp and a little ground pork to mimic the savory crab flavor. It won’t be identical, but it gives the soup the right sweet-salty depth and aroma.

How long does it take to make bún riêu from start to finish?

Plan on about 1.5 to 2 hours. The pork bone broth takes the longest at 45 minutes, and the crab liquid needs careful heating so the curds set gently without boiling hard.

What are the most common mistakes when making the crab curds?

The biggest mistake is boiling the crab liquid too hard, which breaks the curds into tiny bits and makes the broth cloudy. Also avoid stirring constantly; let the curds form, then lift them out gently.

How should I store leftover bún riêu and the components separately?

Store broth, noodles, and toppings separately. The broth and toppings keep 3 to 4 days refrigerated; noodles turn mushy if stored in soup. Reheat the broth gently and add fresh noodles when serving.

What should I serve with bún riêu and how do I finish it properly?

Serve over rice vermicelli with tofu puffs, pork blood cubes, tomatoes, and a spoon of the crab curds. Finish with herbs, bean sprouts, lime, chili, and a small dab of mắm tôm stirred into the broth.