Bihun Soup Recipe: Fragrant Lemongrass and Coconut Noodle Delight

This fragrant bihun soup recipe brings the aromatic essence of Southeast Asia to your kitchen with its signature lemongrass and coconut broth. The delicate rice noodles absorb the rich, herbal flavors while tender proteins and fresh vegetables create a harmonious balance.

What sets this dish apart is the layered complexity—bright citrus notes from lemongrass, creamy coconut milk, and savory stock that transforms simple ingredients into a restaurant-worthy meal.

The beauty of bihun soup lies in its versatility—whether you prefer a lighter chicken broth or a heartier pork-based version, the technique remains the same. The key is simmering the broth low and slow to develop deep flavors, then adding the noodles just before serving to prevent mushiness.

Fresh herbs like Thai basil or cilantro add a final burst of freshness that elevates every spoonful.

What you'll end up with is a bowl of fragrant, comforting soup where each component plays its part—tender noodles, perfectly cooked proteins, and a broth so flavorful it tastes like it's been simmering for hours.

The aroma alone will draw everyone to the table, while the first bite delivers that perfect harmony of textures and flavors that makes this dish a staple in Southeast Asian cuisine.

Serve with lime wedges and chili slices for brightness and heat, and watch as this simple yet sophisticated soup becomes the star of your meal. The best part?

It's easier to make than you think, with techniques that build on each other to create a dish that feels both comforting and special.

Ingredients for bihun soup

These fragrant ingredients transform simple noodles into a restaurant-worthy Southeast Asian delight.

The lemongrass and galangal are non-negotiable for that authentic aroma. Asian markets carry fresh galangal, but if you can't find it, ginger works in a pinch (though it's not the same). For lemongrass, grab the stalks with tight, pale inner cores—those are the freshest. Thai Kitchen sells pre-bruised lemongrass in jars if you're short on time. The pork shoulder adds richness, but chicken breast keeps it lighter. Trim excess fat for a cleaner broth, but leave some for flavor. Kaffir lime leaves? Amazon or specialty stores are your best bet—freeze extras for future use.

No coconut milk? Light coconut milk plus a splash of water gets you close, but the texture will be thinner. Fish sauce is essential—Red Boat is the gold standard, but any reputable brand works. For palm sugar, Trader Joe's carries it, or use brown sugar in equal measure. Thai basil is a must for that signature flavor, but regular basil with a dash of cilantro works if you're stuck. The rice noodles? Bihun or vermicelli noodles from the Asian aisle are perfect—just don't boil them too long or they'll turn mushy.

This soup tastes even better the next day as flavors meld. Store leftovers in the fridge for 3-4 days or freeze for 3 months in airtight containers. The broth separates when chilled—just stir before reheating. For serving, keep lime wedges and chili slices on the side so everyone can adjust heat and brightness to taste. Double the broth if you're feeding a crowd—it reheats beautifully.

Step-by-step instructions for bihun soup

Here's how to create this aromatic, comforting noodle soup with layers of flavor.

First, slice the 1.5 lb chicken breast into thin strips about ¼-inch thick—this ensures even cooking. Cut the 1 lb pork shoulder into ½-inch chunks and set aside. In a large bowl, combine the 3 whole lemongrass stalks (bruised and cut into 2-inch pieces), 2 inches galangal slice, and 4 whole kaffir lime leaves (tied in a knot). This aromatic bundle will infuse the broth with its signature fragrance.

I like to bruise the lemongrass by gently pounding it with the flat side of a knife before cutting—this releases more oils and intensifies the flavor. The galangal and kaffir lime leaves add a unique citrusy, peppery note that's essential to this dish. Don't skip bruising these ingredients; it makes all the difference in the final aroma.

Heat a large pot over medium-high heat and add the pork shoulder chunks. Cook for 5-6 minutes until they turn opaque and release their fat. Remove the pork and set aside. In the same pot, add the chicken strips and cook for 3-4 minutes until they turn white and no longer pink in the center. Remove and set aside with the pork.

Now, add the aromatic bundle to the pot and pour in the 4 cups chicken stock. Bring to a boil, then reduce heat to medium-low and let it simmer for 15 minutes. This allows the flavors to meld together. After simmering, carefully remove the aromatic bundle with tongs—you don't want any lemongrass or lime leaves in your soup.

Pour in the 1 can (13.5 oz) coconut milk and stir well. Add the 2 tbsp palm sugar and 1 tbsp fish sauce, then return the pork and chicken to the pot. Simmer for another 10 minutes until the flavors are well combined. Taste and adjust seasoning if needed—you might want to add a bit more fish sauce for saltiness or sugar for sweetness.

The coconut milk should create a creamy, velvety texture that contrasts beautifully with the aromatic broth. Here's the thing—don't rush this step. The longer the coconut milk simmers with the broth, the richer and more flavorful the soup becomes. This is where the magic happens.

While the broth simmers, prepare the 8 oz bihur rice noodles according to package instructions—usually soaking in hot water for 5-7 minutes until they're tender but still slightly chewy. Drain and set aside. Just before serving, add the cooked noodles to the pot and stir gently to coat them in the coconut broth.

Turn off the heat and let the noodles absorb some of the broth for 1-2 minutes. Then, stir in the 0.5 cup Thai basil leaves, 0.25 cup cilantro leaves, and 3 whole green onions (thinly sliced). The herbs should wilt slightly but still retain their vibrant color and fresh aroma. This is the moment that matters: the herbs should be added just before serving to preserve their freshness and bright flavors.

Ladle the soup into bowls and serve immediately with the 2 whole lime wedges and 2 whole bird's eye chili (sliced) on the side. The lime adds a bright, tangy contrast to the rich coconut broth, while the chili brings a spicy kick that balances the dish. I always serve this soup piping hot—it's meant to be enjoyed right away while the noodles are tender and the broth is fragrant.

Each spoonful should deliver a perfect harmony of creamy coconut, aromatic lemongrass, savory chicken and pork, and fresh herbs. The texture contrast between the chewy noodles and the velvety broth is what makes this dish truly special. Don't forget to adjust the spice level to your preference—add more chili if you like it spicier, or serve the chili on the side for those who prefer it milder.

Flavor customization for this recipe

Spice Level Control

Adjust heat to your taste by controlling the bird's eye chili. For mild heat, use just 1 chili slice per bowl, while 2-3 slices deliver serious spice. I like to serve extra chili on the side so everyone can customize their bowl.

A pinch of sugar (about ¼ tsp) on the chili slices balances the heat beautifully. 🌶️

Creamy vs. Light Broth

Swap coconut milk for ½ cup heavy cream to make the broth lighter but still rich. For extra creaminess, add ¼ cup coconut cream (the thick part from the can) after simmering.

I’ve also made a vegan version using full-fat coconut milk plus 1 tbsp cornstarch to thicken it slightly. The texture changes but keeps that signature velvety quality.

Herb Variations

Thai basil is essential, but swap it for Italian basil + 1 tsp fish sauce if you can’t find it. For a sweeter note, add ¼ cup shredded mint—it pairs surprisingly well with the coconut.

I’ve also tried shiso leaves (available at Asian markets) for a unique, slightly peppery flavor that’s worth the hunt.

Protein Swaps

Replace chicken with shrimp (peeled and deveined) for a lighter option—cook them for just 2-3 minutes until pink. For a heartier bowl, add ½ lb firm tofu (pressed and cubed) alongside the pork.

I’ve even made a vegetarian version with just tofu and mushrooms, using 1 tbsp soy sauce instead of fish sauce for umami depth.

Sweet-Savory Balance

Adjust the palm sugar to taste—reduce to 1 tbsp for less sweetness or increase to 3 tbsp for a richer, dessert-like finish. A splash of lime juice (1 tsp) brightens the broth if it tastes too heavy.

For a smoky twist, add ½ tsp smoked paprika when simmering the coconut milk. 💫

Regional Twists

For a Malaysian-style version, stir in 1 tbsp sambal oelek with the fish sauce and top with crushed peanuts. In Singaporean homes, they often add hard-boiled eggs (sliced) and bean sprouts for crunch.

I’ve also seen a Thai-inspired take with tom yum paste (1 tsp) added to the broth for tangy depth.

Frequently asked questions about bihun soup