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Thai Coconut Chicken Soup

Tom kha gai balances rich coconut milk against the sharp, citrusy notes of lemongrass, lime leaves and lime juice, with a gentle heat from chili and fish sauce rounding it out. This home version leans on accessible substitutes where needed while staying true to that signature sweet-sour-savory balance.

Why you'll love this recipe

• Bright, complex flavor from a short ingredient list
• Rich coconut broth without being heavy
• Ready in about 35 minutes
• Naturally gluten-free with tamari instead of soy sauce

Ingredients

Full ingredient list below — check off items as you shop or cook.

Instructions

1. Heat the oil in a pot over medium heat and lightly sauté the chicken for 2-3 minutes, just until it turns opaque on the outside; it doesn't need to cook through yet.
2. Add the coconut milk, chicken broth, lemongrass, lime leaves and galangal. Bring to a gentle simmer (do not boil hard, which can cause coconut milk to separate).
3. Stir in the fish sauce and brown sugar, then add the mushrooms and simmer for 8-10 minutes, until the chicken is fully cooked and the mushrooms are tender.
4. Remove from heat and stir in the lime juice and chiles to taste.
5. Taste and adjust the balance of salty (fish sauce), sour (lime) and sweet (sugar) as needed.
6. Discard the lemongrass and lime leaves if desired, or leave them in for presentation (they're not meant to be eaten). Garnish with cilantro before serving.

Tips for success

• Simmer gently rather than boiling hard — a vigorous boil can cause coconut milk to break and turn grainy.
• Add the lime juice off the heat at the very end; boiling it can turn the soup bitter.
• If you can't find galangal or kaffir lime leaves, ginger and lime zest are reasonable substitutes, though the flavor will be slightly different.
• Taste and adjust at the end — a great tom kha gai is a balance of salty, sour, sweet and spicy that's worth fine-tuning.

Frequently asked questions

What's the difference between tom yum and tom kha gai?

Tom yum is a clear, hot-and-sour broth, while tom kha gai is enriched with coconut milk for a creamier, milder result.

Can I substitute regular ginger for galangal?

Yes, ginger is the closest common substitute, though galangal has a more citrusy, piney flavor if you can find it at an Asian grocery store.

Is tom kha gai very spicy?

It's traditionally mild-to-moderate in heat; adjust the amount of Thai chiles to make it as mild or spicy as you like.

Can I make this soup vegetarian?

Yes, swap the chicken for tofu or extra mushrooms and use soy sauce instead of fish sauce.

Nutrition (per serving)

Calories	328
Protein	22g
Carbs	10g
Fat	23g
Sodium	720mg
Sugar	4g

Nutrition values are estimates and will vary based on exact ingredients and brands used.

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