Name: Authentic Tom Kha Gai (Thai Coconut Chicken Soup) Recipe
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: Thai
Ingredients: 2 cups chicken stock (unsalted, preferably homemade); 1 ½ cups coconut milk; ½ tsp table salt; 1 lb chicken thigh (boneless skinless, cut into 1-inch pieces); 1 stalk lemongrass (bottom half only, smashed and cut into 2-inch pieces); 12 thin slices galangal; 5 makrut lime leaves (twisted to bruise and torn into big chunks); 1-3 Thai chilies (to taste, smashed until broken or cut into large pieces); 2 Tbsp fish sauce; 1 tsp finely chopped palm sugar (or granulated sugar); 2 ½ Tbsp lime juice; 5.5 oz oyster mushrooms (torn into bite-size pieces); Chopped green onion and/or cilantro (for garnish); Jasmine rice (for serving, optional)

Jump to Recipe· 4.4 from 55 reviews

If you have ever craved the perfect balance of creamy, tangy, spicy, and herbaceous flavors in a bowl, you must try this Authentic Tom Kha Gai (Thai Coconut Chicken Soup) Recipe. This traditional Thai delight brings together fragrant lemongrass, zesty lime, tender chicken, and luscious coconut milk in a soup that warms both your heart and soul. It’s a soul-soothing dish that captures the essence of Thai home cooking in every sip, making it an irresistible favorite for any season.

Ingredients You'll Need

The image shows several fresh ingredients neatly arranged on a white marbled surface. At the bottom left, there is a clear glass bowl filled with small pieces of pink chicken. Above it, a wider glass bowl contains a light brown broth. To the right of these, oyster mushrooms with smooth, light gray caps form a cluster. Nearby, two pale yellow stalks of lemongrass lie parallel to each other. A piece of bright yellow ginger and two dark red chili peppers sit close by. A small glass bowl holds minced light yellow garlic. Fresh green leaves, some broad and some like sprigs of coriander, are spread out in the top left area. A wedge of bright green lime and a whole lime are positioned near the bottom right. Finally, a clear measuring cup filled with white coconut milk stands at the top. The scene is clean and organized, with soft, natural lighting photo taken with an iphone --ar 4:5 --v 7

One of the wonderful things about this soup is how elegantly simple the ingredients are. Each plays a crucial role, whether it's lending depth, freshness, or that signature creamy texture characteristic of authentic Thai cuisine.

Chicken stock: Use unsalted, preferably homemade, for a pure, rich base that lets the other flavors shine without overpowering.

Coconut milk: Provides the creamy, decadent backbone essential to the soup's luscious texture and tropical flavor.
Table salt: Just enough to season the chicken and balance the sweetness from the sugar and coconut.
Chicken thighs: Boneless and skinless, these tender pieces stay juicy and absorb the aromatic broth perfectly.

Lemongrass stalk: The bottom half, smashed and cut, delivers bright citrus notes that brighten the soup beautifully.
Galangal slices: This aromatic root adds a sharp, almost piney flavor that’s completely unique to Thai cuisine.
Makrut lime leaves: Twisted and torn, these fragrant leaves bring a fresh, zesty aroma that elevates the broth.

Thai chilies: Adjust quantity for your spice tolerance, adding a lively kick to contrast the creamy coconut.
Fish sauce: The soul of Thai cooking, it adds savory depth and umami complexity to the soup.
Palm sugar: Or granulated sugar for a gentle sweetness that balances the tang and spice.

Oyster mushrooms: Torn into bite-size pieces, they add an earthy texture that complements the chicken.
Lime juice: Freshly squeezed to inject the bright, zesty punch that wakes up the flavors just before serving.
Chopped green onion and/or cilantro: For a fresh herbaceous garnish that adds color and lively aroma.

Jasmine rice (optional): Lovely served alongside to soak up the flavorful broth.

How to Make Authentic Tom Kha Gai (Thai Coconut Chicken Soup) Recipe

Step 1: Poach the Chicken

Begin by bringing your homemade or quality chicken stock to a gentle boil. Add the salt and chicken thigh pieces, then let them simmer gently for about 15 minutes. This slow poaching keeps the chicken tender and juicy while imparting subtle flavor into the broth. The depth of the chicken stock forms the hearty base for the soup’s complex profile.

Step 2: Infuse with Aromatics

Next, introduce the coconut milk along with the smashed lemongrass stalk, galangal slices, makrut lime leaves, chilies, oyster mushrooms, half the fish sauce, and palm sugar. Simmer this fragrant mixture for 5 minutes, allowing the herbs and spices to release their enticing aromas and flavors. This infusion stage is what transforms a simple soup into an authentic masterpiece, creating layers of taste that sing.

Step 3: Balance the Flavors

After simmering, it’s time to taste the soup and adjust. Add more fish sauce if you want it saltier and deeper; then turn off the heat to preserve the fresh brightness. Stir in about 2 tablespoons of lime juice, and tweak with more to suit your preference. This final acidity gives the soup its refreshing zing, beautifully balancing the richness of the coconut milk.

Step 4: Garnish and Final Touches

Before serving, sprinkle chopped green onions and cilantro on top for a burst of freshness and color. Remember to remove the lemongrass, galangal, and lime leaves—they’ve done their job infusing the broth but are too tough to eat comfortably. Now your soup is ready to delight!

How to Serve Authentic Tom Kha Gai (Thai Coconut Chicken Soup) Recipe

The image shows four steps of cooking soup in a white pot on a stove with a white marbled background. In the first step, small white chicken pieces are floating in light yellow broth in the pot. The second step shows a white liquid being poured from a white jug into the pot, mixing with the broth and chicken. The third step has the pot filled with a creamy white soup base, with green leaves and light yellow stalks floating on top. The last step shows the creamy soup now containing thin white and light brown mushroom slices arranged across the surface alongside the green leaves and stalks. Each step's pot contents change clearly in color and texture, showing the cooking process. Photo taken with an iphone --ar 4:5 --v 7

Garnishes

A simple garnish can elevate this soup wonderfully. The crisp, fresh bite of chopped green onion and cilantro complements the creamy broth and adds a lovely herbal aroma. Feel free to add a few thin slices of fresh chili on top if you want to up the heat visually and flavor-wise.

Side Dishes

Though the soup shines on its own, pairing it with fragrant jasmine rice helps soak up every last drop of that rich, tangy broth. For a more elaborate meal, it pairs beautifully with light Thai appetizers like spring rolls or a crisp papaya salad to contrast the richness of the soup.

Creative Ways to Present

To impress guests, serve the soup in individual bowls with the garnishes displayed creatively on the side, so everyone can personalize their bowl. For a fun twist, offer lime wedges and extra fish sauce at the table for guests who love tweaking their soup’s flavor balance. This interactive element captures the communal spirit of enjoying an Authentic Tom Kha Gai (Thai Coconut Chicken Soup) Recipe.

Make Ahead and Storage

Storing Leftovers

If you happen to have any leftovers, store the soup in an airtight container in the refrigerator for up to 3 days. Keep the herbs separate if possible, as prolonged soaking can make the broth bitter. When ready to eat, simply reheat gently on the stove to preserve the delicate flavors.

Freezing

You can freeze this soup, though coconut milk's texture might change slightly upon thawing. Pour the soup into freezer-safe containers, leaving some headspace. Defrost overnight in the fridge and stir well before reheating to restore its creamy consistency.

Reheating

For best results, reheat the soup slowly over medium-low heat, stirring occasionally. Avoid boiling vigorously, which can break the coconut milk’s emulsion. Once warmed through, add a splash of fresh lime juice to brighten and revive the vibrant flavor just before serving.

FAQs

What can I substitute for galangal if I can’t find it?

While galangal has a unique sharp and citrusy flavor, you can substitute with peeled fresh ginger in a pinch. The taste won't be identical but will still provide some aromatic warmth to the soup.

Is it necessary to use chicken thighs instead of breasts?

Chicken thighs are preferred for their juiciness and flavor retention during simmering, but boneless, skinless chicken breasts work too if you prefer a leaner option. Just be careful not to overcook them to avoid dryness.

Can I make this soup vegetarian?

Absolutely! Replace chicken stock with vegetable stock, omit the chicken, and swap fish sauce for a vegan alternative like soy sauce or mushroom sauce. Adding tofu and your favorite veggies can transform it into a delicious vegetarian version.

How spicy is Authentic Tom Kha Gai?

The heat level depends on how many Thai chilies you use. You can adjust from mild to fiery according to your taste. Remember, the creamy coconut milk helps mellow the spice beautifully.

Should I eat the herbs used in the soup?

The lemongrass, galangal, and makrut lime leaves are for infusing flavor and are tough and fibrous, so they are not meant to be eaten. Remove them before serving or inform guests not to eat them.

Final Thoughts

There is something truly magical about the warmth and balance found in the Authentic Tom Kha Gai (Thai Coconut Chicken Soup) Recipe. It’s impossible not to fall in love with its creamy coconut richness, lively herbs, and tender chicken. Whether you’re looking to impress friends or simply treat yourself to a taste of Thailand at home, this soup is a wonderful choice that delivers comforting flavor by the bowlful. Give it a try and watch it become a cherished staple in your kitchen.

Authentic Tom Kha Gai (Thai Coconut Chicken Soup) Recipe

Ingredients You'll Need