Bun Rieu (Vietnamese Crab and Pork Tomato Noodle Soup)
Quick answer
Bun rieu is a Vietnamese noodle soup from the north built on two unconventional foundations: freshwater paddy crabs and fermented shrimp paste.
What makes this special
- Bun Rieu is a Vietnamese noodle soup featuring soft crab protein dumplings in a tangy tomato broth.
- Crab protein heated gently floats to the surface as soft custard dumplings
- Tomatoes dissolve into the broth balancing crab umami with fruit acidity
Key ingredients
Core cooking flow
- 1 Place 250g crab meat, 200g ground pork, and 1 egg in a bowl and mix thorough...
- 2 Chop 3 tomatoes into wedges and saute them in a pot until they soften and re...
- 3 Pour in 1700ml of water and stir in 1 teaspoon of shrimp paste, ensuring it...
Bun rieu is a Vietnamese noodle soup from the north built on two unconventional foundations: freshwater paddy crabs and fermented shrimp paste. Together they produce a broth of unusual complexity that is simultaneously sweet, savory, and funky in ways that fish-sauce-based soups are not. Small river crabs are pounded whole, shell and all, in a mortar, then mixed with water and strained through a sieve to extract a turbid, intensely crab-scented liquid. This liquid is heated gently over low flame until the crab proteins coagulate into a soft, custard-like mass that floats to the surface, forming the crab cake that defines the dish. Tomatoes are added to the simmering broth and break down over time, tinting it red and contributing a fruity acidity that balances the crab richness. Mam tom, the fermented shrimp paste, is kept tableside and stirred in individually according to each diner's tolerance for pungency. A single spoonful transforms the broth into something considerably more intense and complex. Rice vermicelli provides a neutral base, while fried tofu puffs absorb broth during cooking and release it in each bite. Morning glory greens add a vegetable counterpoint. In Hanoi, bun rieu vendors typically specialize in this one soup, ladling hundreds of bowls from a single pot each morning before selling out by noon.
Instructions
Read the steps as a cooking flow: prep, heat, seasoning, doneness control, and finish.
- 1Prep
Place 250g crab meat, 200g ground pork, and 1 egg in a bowl and mix thoroughly until a cohesive, soft mixture forms for the crab cakes.
- 2Heat
Chop 3 tomatoes into wedges and saute them in a pot until they soften and release their colorful red color and natural acidity into the base.
- 3Step
Pour in 1700ml of water and stir in 1 teaspoon of shrimp paste, ensuring it dissolves completely to create a savory, complex broth with deep umami notes.
- 4Heat
Once the broth reaches a rolling boil, drop the crab mixture by the spoonful and cook until the protein coagulates into soft, custard like lumps floating on top.
- 5Control
Season the soup with 2 tablespoons of fish sauce and simmer on low heat for 10 minutes to allow the flavors to meld and the tomatoes to break down.
- 6Finish
Arrange 400g of cooked rice noodles in bowls, pour over the hot broth, and carefully top with the delicate crab lumps to preserve their soft, airy texture.
After the steps
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