Thai Coconut Soup (Tom Kha)
A fragrant, creamy soup with chicken, mushrooms, lemongrass, and coconut milk.
This is under twenty minutes of real work for a dinner that tastes like considerably more. 6 ingredients, 5 steps, 310 calories and 22g of protein a serving. It belongs in the soups & bowls corner of the collection, and it is one of the ones worth learning by heart.
Why this one works
Bowl food is the easiest kind of meal to scale and the easiest to make ahead. Most of these are better on the second day than the first.
The simmering stage is where the flavour develops, and it needs no attention beyond the occasional stir, so it is a good window to set the table or deal with the washing up.
Ingredients
Makes 4 servings
- 1 lb chicken breast, sliced
- 1 can coconut milk
- 2 cups chicken broth
- 8 oz mushrooms
- 2 stalks lemongrass
- Lime juice, chili flakes, cilantro
Notes on the key ingredients
Chicken breast goes from juicy to chalky in about ninety seconds. Pound thicker ends flat so the whole piece cooks evenly, and rest it a few minutes before slicing.
Use full-fat coconut milk from a can, not the carton kind meant for cereal. Light versions split and thin out when simmered.
Low-sodium broth gives you control over the seasoning. Regular broth plus added salt usually lands too salty.
Substitutions
- No chicken? Use turkey cutlets, pork tenderloin, or chickpeas.
- No coconut milk? Use evaporated milk or heavy cream, though you will lose the coconut note.
- No cilantro? Use flat-leaf parsley, or a mix of parsley and mint.
Instructions
- Simmer broth with lemongrass 5 minutes.
- Add coconut milk and chicken, cook 8 min.
- Add mushrooms, simmer 4 more minutes.
- Remove lemongrass. Finish with lime juice.
- Garnish with cilantro and chili flakes.
Tips for getting it right
- Keep it at a lazy simmer rather than a rolling boil. A hard boil breaks up anything delicate and reduces the liquid faster than the flavours can develop.
- Taste before it reaches the table. Salt levels vary with the brand of broth, cheese and sauce you used, and this is the last point at which you can fix it.
Storage, make-ahead and reheating
- Fridge: up to four days in a sealed container. Most simmered dishes are better on the second day, once the flavours have settled.
- Freezer: up to three months. Leave room at the top of the container for expansion, and thaw overnight in the fridge.
- Reheating: gently on the stovetop with a splash of water or broth to loosen it. The microwave works but heats unevenly, so stir halfway.
- Making it ahead: the prep work keeps well even when the finished dish does not. Chop and measure the night before and the 20 minutes on the night drops to closer to ten.
Variations
Make it vegetarian
Swap the protein for a tin of chickpeas or white beans, rinsed and added at the same point, or for pressed firm tofu browned first in a hot pan. Use vegetable broth in place of chicken broth.
Dial the heat down
Halve the chilli element and serve something cooling alongside, such as plain yoghurt, sour cream or sliced avocado. Children will eat it happily at that level.
Stretch it further
Adding a handful of greens, a tin of beans or an extra cup of cooked grain takes this from four servings to six without much change to the 20 minute timing.
What to serve with it
- Crusty bread or a toasted pita
- A scattering of fresh herbs and something crunchy on top
- A wedge of lime at the table
Nutrition per serving
| Calories | 310 |
|---|---|
| Protein | 22g |
| Servings | 4 |
| Total time | 20 minutes |
Figures are estimates and will vary with the brands and exact quantities you use.
Common questions
How long does Thai Coconut Soup (Tom Kha) take to make?
About 20 minutes from start to finish, including prep. If you chop and measure ahead of time, the active cooking is closer to 12 minutes.
Can I make this ahead of time?
Yes, and it improves. Make it a day ahead, cool it, and reheat gently. The flavours settle overnight.
How many does this serve?
Four as written, at 310 calories and 22g of protein a serving. It scales up cleanly if you have the pan space; just avoid crowding, which steams rather than browns.
Will children eat this?
Generally yes, though it helps to serve the stronger components on the side rather than mixed through, so they can be added or avoided plate by plate.