Vietnamese Crab Tapioca Noodle Soup (Bánh Canh Cua)
Bánh canh cua Say it: bahn kahn koo-ah
Bánh canh cua is a comforting noodle soup from Southern Vietnam, especially popular in the Mekong Delta region and Ho Chi Minh City. Thick, chewy noodles made primarily from tapioca starch swim in a fragrant, savory broth built from fresh crab. Tender crab meat, a touch of crab roe for color and richness, and bright herbs finish the bowl. The silky, slightly bouncy texture of the fresh noodles paired with the deep seafood flavor makes this dish both humble and special. It is commonly eaten for breakfast or a satisfying lunch at bustling street stalls and family tables.
Vietnamese Crab Tapioca Noodle Soup (Bánh Canh Cua)
Bánh canh cua
Pronounced bahn kahn koo-ah
- Serves
- 4
- Prep
- 35 min
- Cook
- 40 min
- Total
- 1 hr 15 min
- Level
- Medium
Also nut-free and egg-free.
Allergens: contains fish, shellfish. Check labels on packaged ingredients.
Ingredients
Amounts are scaled. Cooking times and pan sizes stay the same.
Method
If using whole crabs, steam or boil them for 8-10 minutes until shells turn bright orange. Cool slightly, then crack the shells and pick out all the meat. Reserve the shells, any roe, and the crab meat separately.
Place the tapioca starch in a large heatproof bowl. Gradually pour in the boiling water while stirring vigorously with a wooden spoon or spatula until a shaggy dough forms. Knead for 3-4 minutes until smooth and pliable. Cover and rest for 10 minutes.
On a surface lightly dusted with tapioca starch, roll the dough into a thin log about ½ inch (1 cm) thick. Cut the log into ¼-inch (6 mm) slices to form short, thick noodles. Toss lightly with extra starch to prevent sticking.
Heat the vegetable oil in a large pot over medium heat. Add the chopped shallots and minced garlic; sauté until fragrant and lightly golden, about 2 minutes.
Add the reserved crab shells (if using) and stir for 1 minute to release flavor. Pour in the 6 cups (1.4 L) water or stock, fish sauce, sugar, and white pepper. Bring to a boil, then reduce to a gentle simmer for 20 minutes.
Strain the broth through a fine mesh sieve, discarding the shells. Return the clear broth to the pot and bring back to a simmer. Stir in the crab roe if using; it will tint the broth a beautiful pink-orange color.
Carefully drop the cut noodles into the simmering broth. Cook, stirring gently, for 4-6 minutes until the noodles float, turn translucent, and have a chewy but tender bite.
Add the reserved crab meat to the pot and simmer just until heated through, about 1 minute. Taste and adjust seasoning with additional fish sauce or a pinch of sugar if needed.
Ladle the hot soup into serving bowls. Generously top with sliced green onions, chopped cilantro, and a squeeze of fresh lime. Serve immediately with bean sprouts and herbs on the side.
Regional variants
Central Vietnamese versions sometimes lighten the broth with pork bones or add shrimp. Home cooks may include slices of Vietnamese pork sausage (chả lụa) or crispy fried shallots for added texture and flavor.
Cook's notes
- Fresh crab delivers the most authentic flavor, but high-quality pasteurized crab meat and prepared seafood stock make an excellent quicker version.
- The noodles continue to absorb liquid as they sit; add a splash of hot water or stock when reheating if the soup becomes too thick.
- Fry a little extra crab roe in oil and drizzle it over each bowl for extra richness and color.
Serve with
Fresh herbs, bean sprouts, lime wedges, and chili sauce or fresh chilies.
Make ahead and storage
Prepare the broth and crab meat up to 1 day ahead and refrigerate. Make the fresh noodles and assemble the soup just before serving.
