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Khao Soi recipe in a black bowl.

Khao Soi (Thai Coconut Noodle Soup)

5 Stars 4 Stars 3 Stars 2 Stars 1 Star 5 from 149 reviews

Description

A flavorful and very addictive Northern Style Thai Coconut Curry Noodle Soup, called Khao Soi. Easy and fast, and so yummy. This simplified version uses store-bought red chili paste. I highly recommend doubling the broth for extra brothy. 


Ingredients

Units Scale
  • 6-8 ounces dry rice noodles or egg noodles (or sub ramen noodles, or linguini). This dish is typically made with Chinese egg noodles.

Coconut Broth

  • 1 tablespoon coconut oil, (or peanut oil or olive oil)
  • 1 large shallot, finely diced (or sub half an onion)
  • 2 tablespoons chopped lemongrass
  • 4 garlic cloves, roughly chopped
  • 2 tablespoons Thai Red Curry Paste (store-bought, I like Maseri brand), add more for spicier
  • 1/2 teaspoon ground turmeric (or use grated turmeric)
  • 1/2 teaspoon yellow curry powder
  • 1/2 teaspoon ground cardamom powder
  • 14-ounce can of coconut milk, full-fat
  • 1 cup chicken broth (or veggie broth, or use water and one chicken bouillon cube)
  • 6 fresh kaffir lime leaves (optional, but delicious!)
  • 1 thinly sliced red bell pepper (optional- sub other veggies)
  • 2 tablespoons fish sauce- or vegan fish sauce
  • 2 tablespoons soy sauce ( perhaps reduce if using vegan fish sauce, or use to taste)
  • 2 tablespoons brown sugar, palm sugar or an alternative substitute
  • 1 tablespoon chili garlic sauce (Sambal Olek)
  • salt and pepper to taste
  • 1 lime, more for serving

Protein

  • 8-16 ounces protein: raw chicken breast (see notes), prawns, crispy tofu, or leftover baked chicken or rotisserie chicken)

Garnish with pickled mustard greens, crunchy noodles, cilantro, or Thai basil (or both) and more lime wedges.


Instructions

  1. Cook Noodles. Cook egg noodles according to package directions. If using rice noodles, place them in a large baking dish, pour boiling water over the noodles, and let them sit, stirring occasionally, until they are al dente. 
  2. Make the Broth. In a large pot, heat oil over medium heat. Add shallot, garlic, and lemongrass. Saute until fragrant and golden, about 3-4 minutes.  Add red curry paste,  turmeric, yellow curry powder and cardamom. Sauté for 1 minute. Add the coconut milk, chicken broth, and kaffir lime leaves and bring to a simmer, stirring. Once gently simmering, add the fish sauce, sugar, soy sauce, and chili garlic paste.
  3. Protein: Add the chicken breasts (or prawns) and any quick-cooking veggies, and gently simmer covered, until cooked through. Chicken will take roughly 10-12 minutes, and prawns will take 3-4 minutes.  If adding whole chicken breasts, shred and return to the soup, simmer two minutes.  See notes for Crispy Tofu
  4. Taste and Season. Give a generous squeeze of lime. Taste, adding more lime/salt/pepper/ red curry paste if necessary. Find the balance between salty, sweet, acidic, and spicy. You want the broth to have flavor and depth to hold up to the noodles. Fish sauce really helps here. Heat up the broth so it is nice and hot. 
  5. Serve. Divide cooked noodles into the bowls and ladle the hot, flavorful soup over top- this way it is a bit easier to handle.
  6. Garnish the bowls with pickled mustard greens (chopped up small), crispy noodles, fresh herbs ( basil and cilantro) and lime wedges.


Notes

Thai Red Chili paste: The quality of the red chili paste makes all the difference here. I like Mae ploy or Masseri! The “Thai Kitchen” brand will lack flavor!

Chicken: You can simmer small chicken breasts “whole” in the broth (10-12 minutes), then once tender and cooked through, shred with two forks. 

Crispy Tofu: Add it to the broth, right at the end. I like adding a little curry powder to the crispy tofu at the end. 

Make Ahead: Feel free to make the soup broth the day before and keep in the fridge, keeping the noodles separate (they will swell in the soup) and simply reheat.

To bump up the heat, add more red chili paste or a few thinly sliced fresh chilies (as a garnish). A few slices of galangal are a nice addition too. 

If the soup lacks depth, more salt, fish sauce, or even a bouillon cube will work. 

Nutrition

  • Serving Size: 4 bowls - with chicken breast
  • Calories: 428
  • Sugar: 10.3 g
  • Sodium: 1075.7 mg
  • Fat: 17.3 g
  • Saturated Fat: 13.9 g
  • Carbohydrates: 50.3 g
  • Fiber: 2.2 g
  • Protein: 18.3 g
  • Cholesterol: 41.4 mg