Súp Măng Cua (Crab and Asparagus Soup)
Why this recipe works
- Clean savoury depth: Chicken stock, crab meat, fish sauce and white pepper build flavour without making the soup heavy.
- Silky but delicate: A light cornflour thickening gives the broth body, while asparagus, crab and egg ribbons keep the texture varied.
- Fast, controlled cooking: The ingredients cook quickly at a gentle simmer, making the soup practical while protecting the crab and egg from becoming tough.
Get the most out of this recipe
Ingredient notes
- Choose clean-picked crab: Use crab meat that has been carefully checked for shell fragments, as the soup’s clear texture leaves little room to hide gritty pieces.
- Prepare white asparagus properly: Peel the stalks and trim the woody ends so the asparagus cooks evenly and stays tender in the broth.
- Season gradually: Fish sauce brings both salt and umami, so adjust it carefully once the crab has warmed through.
Common mistakes
- Boiling too hard: A vigorous boil can toughen the crab and scatter the egg into fine flecks rather than soft ribbons.
- Adding the slurry too quickly: Drizzle the cornflour mixture in slowly while stirring so the broth thickens smoothly instead of forming lumps.
- Overcooking the asparagus: Simmer only until just tender; asparagus that cooks too long loses its clean flavour and gentle bite.
Timing notes
- Have the final ingredients ready: Once the soup is thickened, the egg and spring onion steps move quickly, so whisk and slice before finishing.
- Best served hot: Serve soon after the egg ribbons set, when the broth is glossy and the crab is still tender.
Authenticity notes
- Vietnamese-style comfort: The appeal lies in a clean broth, gentle seafood flavour and a lightly thickened texture rather than a rich or creamy base.
- Asparagus choice: White asparagus gives a mild, soft flavour, while green asparagus is a common practical swap and should be cooked more briefly.
Equipment you'll need
Ingredients
Instructions
- Bring the chicken stock to a gentle simmer in a saucepan over medium heat. Peel the white asparagus, trim the woody ends, then slice into thin rounds (slice the tips a little thicker). Add the asparagus and simmer for 6 to 8 minutes until just tender.
- Stir in the crab meat and fish sauce, keeping the soup at a gentle simmer so the crab stays delicate. Cook for 2 to 3 minutes until the crab is warmed through.
- In a mixing bowl, whisk the cornflour with 4 tbsp cold water from the tap until smooth. Stir the soup in a slow circle and drizzle in the cornflour slurry; simmer for 1 to 2 minutes until lightly thickened and glossy.
- Whisk the eggs in the same bowl. With the soup gently simmering, slowly pour in the egg in a thin stream while stirring to create ribbons, then stop stirring and let the ribbons set for 30 seconds. Season with white pepper.
- Thinly slice the spring onion. Ladle the soup into bowls and scatter over the spring onion. Serve hot.
Recipe notes
Tips
- Keep the soup at a gentle simmer when adding the crab meat and egg so the crab stays tender and the egg forms clean ribbons rather than breaking up.
- If serving to pregnant people, young children, older adults, or anyone immunocompromised, use eggs that are stamped as suitable to be eaten raw or lightly cooked, and make sure the soup returns to a gentle simmer after adding the egg.
Substitutions
- Replace chicken stock with vegetable stock for a lighter, seafood-forward broth.
- Replace white asparagus with green asparagus; add it for the last 3 to 4 minutes so it stays bright and tender.
Storage
- Refrigerate up to 2 days
- Cool quickly, then refrigerate in a sealed container. Reheat gently in a saucepan over low to medium heat until piping hot; avoid boiling hard to keep the crab and egg ribbons tender.
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Recipe overview
- Servings: 3 servings
- Total time: 40min (30min active)
- Difficulty: Easy
- Cuisine: Vietnamese
-
Allergens:
Crustaceans Eggs
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