Tom Kha Gai (Thai Coconut Chicken Soup)

Because of my loved ones’ health needs, I’ve had to completely rethink how I cook lately. Both what I cook and how I cook it. My new rules are simple: no spicy food, one-pot meals, easy, healthy, and it must, as the Chinese say, “have taste.” That last part is tricky. I love bold flavours, but I’ve learned that gentle food can be delicious too.

Lately, my comfort dish of choice is Tom Kha Gai, the Thai coconut chicken soup. Unlike its fiery Thai cousins, this one whispers instead of shouts. You can skip the chilli entirely. It still tastes rich and layered, full of umami from galangal, lemongrass, and coconut milk.

I first learned the recipe from YouTuber Pai Lin. Since then, it has become a strong favourite in my kitchen.

It starts with good chicken, the fresher the better. Poach it gently in stock or lightly salted water. Galangal slices and bruised lemongrass go in next. The aroma fills the kitchen almost instantly.

When the chicken turns tender, I pour in creamy coconut milk. Oyster mushrooms and cherry tomatoes follow. Their sweetness softens the broth, giving it roundness and warmth. Then comes the fun part — seasoning. A splash of fish sauce, a sprinkle of sugar, a squeeze of lime. Suddenly, everything comes alive: salty, sweet, sour, creamy, perfectly balanced.

Sometimes I garnish it with coriander leaves or chopped chilli. Most days, I serve it over blanched beehoon. It’s just as lovely with jasmine rice. The soup feels like a hug — gentle yet full of life. Proof that mild never means boring.

Love Thai food? Try my one-pan pad kra prow, which is super easy and such a flavour bomb!

Tom Kha Gai (Thai Coconut Chicken Soup)

A gentle, flavour-packed Thai coconut chicken soup for no-spice days. This Tom Kha Gai is creamy, umami-rich, and effortlessly one-pot.

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Prep Time 10 minutes mins

Cook Time 18 minutes mins

Course Soup

Cuisine Thai

Servings 2

Equipment

• Deep pot

Ingredients

  

• 1 chicken chop (boneless))
• chicken bones
• 4-5 slices galangal
• 1 stalk lemongrass, pounded
• 1 handful oyster mushrooms, torn
• 7-8 cherry tomatoes
• 1/4 cup coconut milk
• fish sauce and sugar to taste
• 1-2 lime (juice only)
• Optional: coriander leaves

Instructions

 

• Cut chicken meat into bite-size pieces. Season with 1 tsp fish sauce.
• Poach chicken meat and bones over medium to low heat to create a stock.
• Remove bones.
• Add galangal and lemongrass.
• Pour in coconut milk, add mushrooms and tomatoes.
• Season with fish sauce, sugar, and lime juice.
• Garnish and serve over noodles or rice.

Notes

Tom Kha Gai - Quick FAQ

1. What is Tom Kha Gai?

Tom Kha Gai is a Thai coconut chicken soup known for being mild, aromatic, and comforting — creamy from coconut milk and fragrant with galangal and lemongrass.

2. Is Tom Kha Gai spicy?

It doesn’t have to be. Unlike Tom Yum, Tom Kha Gai can be completely chilli-free and still taste delicious. Perfect for gentle diets or low-spice households.

3. What makes Tom Kha Gai different from Tom Yum?

Tom Yum is fiery, sour, and sharp. Tom Kha Gai is creamy, soothing, and lightly tangy — thanks to coconut milk and a gentler flavour profile.

4. What are the essential aromatics?

These three define the soup:

Galangal – peppery, citrusy warmth

Lemongrass – bright, uplifting aroma

Kaffir lime leaves (optional but wonderful)

If you skip any of them, the soup loses its signature fragrance.

5. Can I substitute galangal with ginger?

Not ideal, but possible. Ginger gives heat, while galangal adds perfume. If substituting, use less ginger and add extra lemongrass to balance.

6. Can I use chicken breast instead of thigh?

Yes — just poach gently. Breast meat overcooks easily, so cook it low and slow until just opaque.

7. Why do my coconut milk soups curdle?

Common reasons:

Boiling the coconut milk too hard

Adding acidic ingredients too early

Low-quality coconut milk

Keep the heat gentle after adding coconut milk and squeeze the lime only at the end.

8. Can Tom Kha Gai be made dairy-free or lighter?

It’s naturally dairy-free. For a lighter version:

Use low-fat coconut milk

Add extra stock to reduce richness

Increase mushrooms to bulk up the soup

Keyword one-pot meal, soup, Thai