Prep: 10

Cook: 12

Total: 22

Servings: 4 people

Course: Soup

Cuisine: Thai

Label: Chicken and vegetable soup, Chicken fillet

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Connie’s notes

As with most Thai dishes, the secret is in the spice base. You can have the freshest and reddest tomatoes, and you can have the richest chicken broth made by simmering free range chickens but, without the spice base, the soup will still taste flat.

Let’s start with galangal. It looks like a paler version of ginger but it isn’t ginger. Galanagal and ginger are often cooked together in Thai dishes. But if a recipe calls for galangal, it means exactly that. Substituting ginger is not recommended but, if you do, know that the flavor of the cooked dish will be different.

For details about more of the ingredients in this recipe, see the linked posts below:

How to make chicken bone broth

To make the tastiest chicken tom yum, allow enough time for the herbs and spices to impart their flavor. That means simmering them in the broth before you add the chicken and mushrooms. If you add everything at the same time, either of two things can happen:

If you simmer the ingredients just long enough to cook the chicken through, the broth will not be sufficiently flavored.
If you simmer everything longer until the broth is rich and tasty, the chicken and mushrooms will be overcooked.

Do you need to brown the chicken before adding to the broth? No. You do that when cooking with chunks of meat or with bones when making broth. If using homemade chicken bone broth, that means you have already done the browning part and all the caramelized flavor are already in the broth.

You don’t need to do the same with the chicken slices. If you do, they will be overcooked by the time the soup is done.

Kaffir lime juice was used in this soup. Juice from regular limes is fine.

Before serving the chicken tom yum, you may fish out and discard the galangal, lemongrass and kaffir lime leaves. They have served their purpose and you don’t need them anymore. They were retained for the photos in this recipe for illustrative purposes.

Ingredients

6 cups chicken bone broth
3 slices galangal (dried is fine)
2 whole stalks lemongrass tied into a knot
2 shallots peeled and halved
2 pairs kaffir lime leaves center ribs removed and discarded
2 bird’s eye chilies slit
4 chicken thigh fillets cut into thin slices
2 cups fresh oyster mushrooms torn into smaller pieces if large
2 tomatoes cut into wedges
fish sauce
lime juice
torn cilantro to garnish

Instructions

Pour the chicken bone broth into a pot and bring to the boil.
Drop the galangal slices, lemongrass, kaffir lime leaves and chilies into the broth. Lower the heat. Cover and simmer for 15 minutes.
Add the chicken thigh fillet slices, oyster mushrooms and tomatoes to the broth.
If the broth is unseasoned or underseasoned, add fish sauce at this point.
Cover the pot once more and simmer for another 15 minutes.
Taste the broth. Add more fish sauce, if needed.
Drizzle in the lime juice, a tablespoonful at a time, tasting and adding as you go along until a good balance of salty and sour is achieved.
Ladle the tom yum gai into bowls, sprinkle with cilantro and serve.