Bún riêu is a Vietnamese noodle soup that feels light yet is packed with flavor: tangy tomato broth, tender rice vermicelli, and fluffy crab meatballs that float on the surface. It’s comforting without being heavy, perfect for when you want something warm and slurpable.
Traditional bún riêu can be time-consuming, especially when making broth from bones and sourcing specialty ingredients. This streamlined, homestyle version keeps the essential flavors but fits into an ordinary weeknight. It isn’t strictly traditional, but it delivers the bright tomato broth and tender crab-riêu that make this soup so satisfying.
Why this quick bún riêu works
This recipe preserves the soul of bún riêu without an all-day simmer. It comes together in about 30 minutes using a few smart shortcuts while keeping the balance of savory, tangy and slightly sweet. The crab mixture cooks directly in the broth, forming those signature light, fluffy clusters without extra fuss.
What is bún riêu?
Bún riêu is a Vietnamese noodle soup built on a tomato-based broth and served with rice vermicelli. The bowl is finished with a crab-and-egg mixture (riêu) that poaches in the hot broth and rises as soft, cloud-like meatballs. Traditional recipes often use pork bones, fresh crab, fermented shrimp paste and, in some regional versions, snails. This version leans homestyle and accessible while retaining the key flavors.
Crab paste or shrimp paste?
You can use crab paste, shrimp paste, or a blend of both depending on availability and taste. Crab paste brings sweetness and body; shrimp paste adds umami depth and the classic bún riêu aroma. The oil from shrimp paste is useful for sautéing tomatoes and giving the broth its characteristic color. Use what you can find and adjust to your preference.
- Por Kwan minced crab in spices – Mild, sweet, smooth, with bits of onion.
- Super Brand shrimp paste with soybean oil – Balanced and great for depth without overpowering fishiness.
- Por Kwan minced crab (canned) – Well-seasoned with a touch of chili.
Ingredients overview
Please scroll ⬇️ to the recipe card for full amounts and step-by-step instructions.
This shortcut bún riêu uses pantry-friendly ingredients plus a few Vietnamese staples. The broth is built from chicken broth, water, fish sauce, bouillon, sugar and tomatoes; shallots or onion add aroma; shrimp paste oil or paprika adds color. The riêu mixture combines ground pork, fresh shrimp, dried shrimp, crab paste, lump crab meat and eggs — aim for a moist but not runny texture so the meatballs hold together in the broth. Rice vermicelli is the noodle base; toppings include fried tofu, bean sprouts, herbs and greens to customize each bowl.
Pro tip: For fluffy, tender riêu, balance solids (pork, shrimp, crab) with liquids (crab paste, eggs). The mixture should be moist but not runny so the meatballs stay intact while poaching.
Vermicelli noodles and toppings
Small rice vermicelli are traditional. Cook them separately so the broth remains clear and assemble bowls just before serving. Toppings are the fun part: fried tofu, shredded cabbage, bean sprouts, rau muống (water spinach), Thai basil, mint, purple perilla and lime all complement the soup. Fermented shrimp paste (mắm tôm) is optional for those who enjoy the strong, salty tang — add it sparingly if you’re new to it.
How to make bún riêu (overview)
Start by soaking dried shrimp and pureeing fresh shrimp in a food processor. Combine those with ground pork, crab paste, lump crab meat and eggs to make the riêu mixture. Build the broth by bringing chicken broth, water, fish sauce, bouillon and sugar to a gentle simmer. Sauté shallots and tomatoes (with shrimp paste oil or paprika) to deepen the tomato flavor, then add them to the pot. Gently drop spoonfuls of the crab mixture into the simmering broth; let them cook undisturbed so they form light clusters. Cook noodles separately, then assemble bowls by placing noodles in each bowl and ladling hot broth and riêu over the top. Finish with herbs, vegetables and lime.
How to serve
Place cooked vermicelli in each bowl, ladle hot broth with plenty of crab meatballs and tomatoes, then add toppings: fried tofu, bean sprouts, fresh herbs and greens like rau muống or shredded cabbage. Serve with lime wedges and chili sauce so diners can adjust to taste.
Storage and reheating
Store broth and crab meatballs separately from noodles and fresh toppings. Refrigerate in airtight containers for up to 3 days and reheat gently on the stove until simmering. You can freeze the broth and riêu for up to one month; thaw overnight in the refrigerator before reheating. Cook vermicelli fresh when ready to serve.
Make it and customize your bowl
This quicker bún riêu may skip some traditional steps, but it delivers the tangy broth, fluffy crab riêu and customizable bowl many people crave. Try different toppings and herbs to find your favorite combination.
RECIPE
30 Minute Bún Riêu (Vietnamese Crab and Tomato Noodle Soup)
Equipment
- Food processor
Ingredients
Broth
- 3 cups chicken broth
- 4 quarts water
- 2 tablespoons fish sauce
- 1 tablespoon mushroom or chicken bouillon powder
- 2 tablespoons rock sugar or granulated sugar
- 1 tablespoon vegetable oil
- 1 teaspoon shrimp paste oil or paprika
- 3 shallots or 1 small onion, finely diced
- 4 tomatoes, quartered
- 1 teaspoon salt
Crab Meatballs (Riêu)
- 1 lb ground pork
- ½ lb prawns or shrimp, peeled
- ¼ cup dried shrimp, soaked in hot water
- 1 cup lump crabmeat (packed in water)
- 1 cup shrimp paste (or adjust to taste)
- ½ cup crab paste
- 3 eggs
Noodles
- 1 lb dried rice vermicelli noodles
Optional Toppings
- Fried tofu
- Bean sprouts
- Thai basil, mint, purple perilla
- Morning glory (rau muống) or shredded cabbage
- Lime wedges
- Chopped scallions or cilantro
Instructions
Prep the crab mixture
- Soak dried shrimp in hot water for 10 minutes. Drain and finely mince in a food processor.
- Puree the fresh shrimp in the processor until smooth.
- In a large bowl, combine ground pork, pureed shrimp, minced dried shrimp, shrimp paste, crab paste, lump crabmeat and eggs. Mix until combined and set aside.
Build the broth
- In a large stockpot, combine chicken broth, water, fish sauce, bouillon powder and sugar. Bring to a boil, then reduce to a gentle simmer.
Cook aromatics and tomatoes
- Heat vegetable oil in a skillet over medium heat. Add shrimp paste oil (or paprika) and shallots and cook 2 minutes until fragrant.
- Add tomatoes and salt and cook 2–3 minutes until slightly softened but still holding shape. Transfer to the simmering broth.
Cook the crab meatballs
- Scoop about 1½ tablespoons of the crab mixture and gently drop into the broth. Repeat until all mixture is used.
- Simmer gently 10–12 minutes without stirring too much, until meatballs are cooked through and floating. Taste and adjust seasoning as needed.
Assemble and serve
- Cook rice vermicelli separately according to package instructions and drain well.
- Divide noodles into bowls. Ladle hot broth, crab meatballs and tomatoes over the top.
- Add desired toppings and serve hot with lime on the side.
Notes
- Sautéing tomatoes in shrimp or crab paste oil gives the broth its signature color and depth.
- Avoid stirring after adding the crab mixture so the meatballs stay light and fluffy.
- Cook noodles separately to keep the broth clear.
- Taste the broth before serving and adjust with fish sauce or a pinch of sugar if needed.
Nutrition
Calories: 560 kcal • Carbohydrates: 57 g • Protein: 41 g • Fat: 18 g • Sodium: 2453 mg