National Dish Thailand: Tom Saap (Recipe)
In this article
Discover Tom Saap, a fiery, fragrant soup from the heart of Thailand’s Isaan region! This bold broth brings together lemongrass, kaffir lime leaves and dried chillies for a hit of sour-and-spicy flavour that wakes up every spoonful. It is light yet deeply satisfying, quick to put together, and perfect whenever you fancy something exotic. Bring a little taste of north-eastern Thailand straight to your own table.
About Tom Saap
Tom Saap is a traditional Thai soup celebrated for its aromatic, punchy character. The soup owes its rich depth to a lively blend of fresh herbs, warming spices and a generous squeeze of lime juice. It is not only delicious but also wonderfully simple to make, ideal for chilly days or whenever you are craving something with a real kick. Read on to learn how to recreate this gloriously flavourful soup in your own kitchen.
Ingredients (serves 1–2)
- 200g chicken
- 2 cups chicken stock
- 1 stalk lemongrass
- 3 kaffir lime leaves
- 2–3 Thai dried chillies
- 2 tablespoons fish sauce
- 1 tablespoon lime juice
- 2 tablespoons coriander leaves
- 1 small onion
- Salt to taste
Shopping for the ingredients
When shopping for Tom Saap, look out for fresh, good-quality produce. The lemongrass and kaffir lime leaves in particular are crucial to the soup’s signature flavour. An Asian supermarket is usually the easiest place to gather everything in one go, though a well-stocked grocery or an online retailer will often do the trick too. Pay special attention to the fish sauce, as it is one of the key flavour carriers in the broth.
Preparing the dish
Before you start cooking, make sure all the ingredients are thoroughly washed and prepped. Cut the chicken into bite-sized pieces and slice the onion into thin rings. Chop the lemongrass into roughly 5cm lengths and bruise it lightly so it releases more of its aroma. Tear the kaffir lime leaves into small pieces and gently crush the chillies. This simple groundwork ensures all the flavours are released to their fullest during cooking.
Step-by-step instructions
- Heat the chicken stock in a pan over medium heat.
- Add the lemongrass, kaffir lime leaves and chillies, and let the mixture simmer for about 5 minutes.
- Stir in the chicken and the onion rings, then simmer for a further 10 minutes until the meat is cooked through.
- Add the fish sauce and lime juice, then season the soup with salt to taste.
- Scatter the coriander leaves over the top just before serving.
Gluten-free / lactose-free version
For a gluten-free and lactose-free take on this recipe, you simply need to make sure your chicken stock and fish sauce are gluten-free. Some fish sauces can contain traces of wheat, so it is worth checking the label carefully. Since the recipe is naturally lactose-free, no further adjustments are needed and everyone can enjoy a bowl without worry.
Tips for vegans and vegetarians
To prepare a vegan or vegetarian version of Tom Saap, swap the chicken for tofu or mushrooms. Use a flavourful vegetable stock in place of the chicken stock, and replace the fish sauce with soy sauce or a vegan fish sauce to keep that distinctive savoury depth. With these easy swaps, vegans and vegetarians can savour this delicious soup too.
More tips and tricks
Feel free to play with the quantities of spices and herbs to suit your palate. If you like things hotter, add a few more chillies; for a brighter citrus note, increase the lemongrass or lime juice. This soup is highly adaptable, so you can shape it exactly to your liking. Just take care not to overcook it, so the aromas stay fresh and vivid in the bowl.
Adapting the recipe to your taste
The Tom Saap recipe is easy to tailor to personal preference. If you enjoy it fiery, throw in some extra chillies; if you prefer a milder flavour, simply reduce the amount. You can also experiment with other vegetables such as carrots or broccoli to make the soup more varied. Choose grilled chicken for a smoky note, or chicken breast for a lighter result — much like the flexible approach that works so well in Gaeng Massaman.
Ingredient substitutions
If you struggle to find certain ingredients, there are a few handy alternatives to fall back on. In place of kaffir lime leaves, use 1–2 teaspoons of lime zest. When lemongrass is unavailable, try a little lemon zest with a few squeezes of lemon juice. Light soy sauce also works as a stand-in for fish sauce, though bear in mind the flavour will shift slightly. These tweaks also come in handy when making a hearty curry such as Kaeng Ped.
Drink pairing ideas
A hot bowl of Tom Saap pairs beautifully with a refreshing drink. A traditional Thai iced tea or a light green tea both work wonderfully alongside it. Wine lovers might reach for a light Riesling or a Grüner Veltliner, both of which complement the soup’s spicy, sour notes. A cold beer — ideally an Asian lager — also rounds out the flavours a treat.
Serving and presentation ideas
Presentation plays a big part in enjoying Tom Saap. Serve the soup in attractive, deep bowls and garnish with fresh coriander leaves and a slice of lime. A scattering of crispy shallots or toasted cashews adds extra depth of flavour and a pleasing crunch. A colourful serving plate and a careful arrangement of the garnishes make the dish a feast for the eyes too — the same care that elevates a beautiful platter of Yam Talay.
A bit of history
Tom Saap is a firm part of Thai culinary tradition, originating in the Isaan region of north-eastern Thailand. The soup is known for its hot-and-sour profile, so typical of the food from this part of the country. Often regarded as humble farmers’ fare, it relies on just a few, but intensely flavoured, ingredients. Today Tom Saap is loved right across Thailand and is frequently served as a starter or a light main, a shining example of Thai cuisine.
More recipe ideas
Summary: Tom Saap
Tom Saap is a wonderful dish from the Thai kitchen that delights with its aromatic, intense flavours. With the right ingredients and a little prep time, you can easily make this delicious soup at home. Whether you choose a gluten-free version, a vegan twist or the traditional recipe, the possibilities for adapting it are endless. Give this recipe a go and bring a little piece of Thailand to your dinner table.
