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Bún riêu ba khía (Vietnamese Crab Noodle Soup)
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Vietnam Authentic home cooking from Vietnam, with US measurements.
Originally published on Cookpad Vietnam as Bún riêu cáy biển (ba khía)
A picture of Bún riêu ba khía (Vietnamese Crab Noodle Soup).

Bún riêu ba khía (Vietnamese Crab Noodle Soup)

Nhà Vân
Nhà Vân @cloudy_1992
Quảng Ninh

Ba khía, also known as cáy biển or cáy còng đỏ in northern coastal Vietnam, are small sea crabs found in the tidal flats and mangroves of Quảng Ninh and Hải Phòng. Although their shells are dark, they give the broth a naturally sweet, rich flavor without a strong fishy taste, and add the distinct taste of the sea. For this recipe, I made just two small bowls and used plenty of crab, so I didn’t use pork bone broth. If you’re making a larger batch, you can add pork bone broth for extra sweetness.

Ba khía, also known as cáy biển or cáy còng đỏ in northern coastal Vietnam, are small sea crabs found in the tidal flats and mangroves of Quảng Ninh and Hải Phòng. Although their shells are dark, they give the broth a naturally sweet, rich flavor without a strong fishy taste, and add the distinct taste of the sea. For this recipe, I made just two small bowls and used plenty of crab, so I didn’t use pork bone broth. If you’re making a larger batch, you can add pork bone broth for extra sweetness.

Read more

Bún riêu ba khía (Vietnamese Crab Noodle Soup)

Nhà Vân
Nhà Vân @cloudy_1992
Quảng Ninh

Ba khía, also known as cáy biển or cáy còng đỏ in northern coastal Vietnam, are small sea crabs found in the tidal flats and mangroves of Quảng Ninh and Hải Phòng. Although their shells are dark, they give the broth a naturally sweet, rich flavor without a strong fishy taste, and add the distinct taste of the sea. For this recipe, I made just two small bowls and used plenty of crab, so I didn’t use pork bone broth. If you’re making a larger batch, you can add pork bone broth for extra sweetness.

Ba khía, also known as cáy biển or cáy còng đỏ in northern coastal Vietnam, are small sea crabs found in the tidal flats and mangroves of Quảng Ninh and Hải Phòng. Although their shells are dark, they give the broth a naturally sweet, rich flavor without a strong fishy taste, and add the distinct taste of the sea. For this recipe, I made just two small bowls and used plenty of crab, so I didn’t use pork bone broth. If you’re making a larger batch, you can add pork bone broth for extra sweetness.

Read more
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Ingredients

30–45 minutes
2–3 bowls
  1. 14–18 oz ba khía (sea crab) (400–500 grams)
  2. Tomatoes
  3. 5–6 pork meatballs or Vietnamese pork and herb sausage (chả xương sông)
  4. 4–5 slices pork head cheese (giò tai)
  5. 1small piece firm tofu
  6. 2tomatoes
  7. Bean sprouts
  8. Scallions
  9. 3shallots
  10. Fermented rice (mẻ chua) or rice vinegar
  11. Annatto oil
  12. Basic seasonings (fish sauce, salt, MSG, etc.)
  13. Dried or fresh rice vermicelli noodles (bún)
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Steps

30–45 minutes
  1. 1

    Clean the crabs thoroughly, then blend or pound them into a paste. Add water and strain to extract the crab liquid. Add a pinch of salt. Simmer gently. Carefully stir the bottom of the pot to loosen the crab roe. Skim the crab roe into a bowl. Add the pork meatballs or chả xương sông and pork head cheese to the crab broth and cook until done (chả xương sông may not need to be cooked if already prepared).

    A picture of step 1 of Bún riêu ba khía (Vietnamese Crab Noodle Soup).
    Chả xương sông
  2. 2

    Chop the tomatoes. Slice 3 shallots and fry until golden. Cut the tofu into pieces and fry until both sides are crispy and golden.

    A picture of step 2 of Bún riêu ba khía (Vietnamese Crab Noodle Soup).
  3. 3

    In a pan, heat a little shallot oil and 1 tablespoon annatto oil. Sauté the tomatoes until they release their color. Gently add the crab roe to the tomatoes, season with a little fish sauce, and simmer on low for 1–2 minutes to let the flavors blend. Gently shake or stir the pan to avoid breaking up the crab roe. Pour the tomato and crab roe mixture back into the crab broth. Season the broth with fish sauce, salt, MSG, and fermented rice or rice vinegar to taste.

  4. 4

    Boil the dried rice vermicelli noodles until cooked, or briefly blanch the fresh noodles. Place the noodles in serving bowls and sprinkle with chopped scallions.

  5. 5

    Blanch the fried tofu and bean sprouts in the hot broth. Arrange them in the bowls along with the pork meatballs, pork head cheese, tofu, bean sprouts, and crab roe. Top with fried shallots. Serve hot with chili, satay, or chili sauce. For extra richness and crunch, you can add crispy pork fat if desired.

    A picture of step 5 of Bún riêu ba khía (Vietnamese Crab Noodle Soup).
    A picture of step 5 of Bún riêu ba khía (Vietnamese Crab Noodle Soup).

Linked Recipes

Chả xương sông

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Nhà Vân
Nhà Vân @cloudy_1992
Published in the US on August 19, 2025 14:01
Quảng Ninh
coi trang cookpad là 1 nhật ký nấu ăn, đồng thời nhờ cookpad lưu lại những công thức đã nấu để khắc phục tình trạng nấu ăn không bao giờ đong đếm cũng như ghi nhớ công thức đâm ra có lúc ngon có lúc dở tệ. Mục tiêu nấu ăn rất đơn giản nấu cho chồng con, người thân trong gia đình ăn.
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