Thai Salads: Yam, Larb, Phla and the Art of the Dressing

The word salad sets the wrong expectations for Thai food. A Thai salad is rarely a bowl of leaves. It might be warm grilled beef, glass noodles with prawns, crisp fried fish or pounded green papaya, and what holds it together is not the base but the dressing: sour, salty, a little sweet and often very hot.

These dishes are among the quickest in Thai cooking, and among the most rewarding to make at home, because almost everything depends on tasting and adjusting. Get the dressing right and the rest follows.

Four ways to make a salad

Thai cooking has several kinds of salad, and the name usually tells you the method:

Yam: to mix. Ingredients are tossed with a dressing of lime, fish sauce, sugar and chilli. This is the broadest family.
Larb: minced meat or fish, cooked briefly and dressed with lime, fish sauce, roasted chilli and toasted rice, with plenty of herbs. The classic dish of the northeast.
Tam: to pound. Ingredients are bruised in a mortar with the dressing, as in som tam.
Phla: a dressed salad, usually of seafood or meat, with lemongrass and herbs, often sweetened and deepened with roasted chilli jam.

The yam dressing

Most yam start from the same four ingredients: lime juice, fish sauce, sugar and fresh chillies, often with a little garlic pounded in. It is the four flavours of Thai cooking in their simplest form, and it is worth learning by taste rather than by measure.

A useful starting point is roughly equal amounts of lime juice and fish sauce, with about half as much sugar, and chillies to taste. Dissolve the sugar in the lime and fish sauce first, then add the pounded chillies and garlic. From there, adjust:

Taste the dressing on its own. It should be sharp, salty and hot, a little stronger than seems right, because it will be spread across the other ingredients.
Taste it again on the main ingredient. A dressing that seems balanced from a spoon may need more lime on rich beef or more fish sauce on plain glass noodles.
If it is harsh, add a pinch more sugar. If it is flat, add lime. If it tastes thin, add fish sauce.
Add more chilli at the end, and only after tasting, since heat builds over a few mouthfuls.

Limes vary a great deal in sourness and juice, and fish sauces vary in saltiness, so no fixed ratio works every time. The point of a starting ratio is only to get close quickly.

Three classic yam

Yam woon sen is the glass noodle salad, and one of the most widely made. Softened glass noodles are cooked briefly with minced pork and prawns, then tossed while warm with the dressing, sliced shallots or onion, tomato, Chinese celery and often wood ear mushrooms and roasted peanuts. The noodles soak up the dressing fast, so it is best made just before eating and seasoned a little more boldly than you might expect.

Yam nuea is a grilled beef salad. The beef is cooked to pink, rested, sliced thinly and tossed with the dressing, cucumber, tomato, shallots, mint and coriander. Some versions add a spoonful of roasted chilli flakes or toasted rice for depth. The warm meat and its juices mix with the dressing, which is part of what makes it so good.

Yam pla duk fu shows how far the idea can stretch. Catfish is grilled or poached, flaked, then deep-fried in small handfuls until it puffs into a crisp, airy tangle. It is served with a sour salad of green mango, shallots, chilli and peanuts, and the dressing is often kept on the side or added at the table so the fish stays crunchy. The contrast between crisp, rich fish and sharp, cold mango is the whole point.

Larb and tam: the pounded and the minced

Larb uses a slightly different dressing from yam. There is usually no sugar, or very little, and the flavour comes from lime, fish sauce, roasted chilli flakes and khao khua, the toasted rice powder that gives it a nutty crunch. The herbs, especially mint, sawtooth coriander and spring onion, go in at the last moment.

Tam salads are dressed in the mortar. Garlic and chillies are pounded first, then the dressing ingredients, then the main ingredient is bruised lightly with the pestle while being turned with a spoon. The aim is to crush, not to mash, so the dressing gets into the shreds of papaya, cucumber or long beans without turning them to pulp.

Phla: lemongrass and chilli jam

Phla is a central Thai style that sits between a salad and something richer. Prawns, squid or beef are cooked only briefly, so they stay tender, then dressed with lime, fish sauce and nam prik pao, the sweet and smoky roasted chilli jam. Thinly sliced lemongrass, makrut lime leaf, shallots and mint add fragrance. Some versions finish with a spoonful of coconut cream.

Phla goong, with prawns, is the best known. The chilli jam makes the dressing darker, rounder and a little sweeter than a plain yam, and the raw lemongrass gives a clean, citrus crunch.

Balancing the raw herbs

Herbs in a Thai salad are not a garnish. They are an ingredient, and they are used in quantity. Mint, coriander, Chinese celery, spring onion, sliced shallot and thinly sliced lemongrass all appear, and each salad has its own usual mix.

Add tender herbs such as mint and coriander last, and toss gently so they do not bruise or wilt.
Slice lemongrass and makrut lime leaf as finely as possible. Thick pieces are woody and unpleasant to chew.
Shallots can be sharp. Slice them thinly and, if they are strong, rinse them briefly in cold water.
Balance the herbs against the protein. A rich meat salad can take more herbs, a delicate seafood salad fewer.

Serving Thai salads

Dress salads at the last moment, just before they go to the table. Many are best when the main ingredient is still warm, so the dressing soaks in, while the herbs and raw vegetables stay crisp and cool.

Thai salads are not a separate course. They are one dish among several at a shared meal, eaten with rice to soften their sharpness. Raw vegetables such as cabbage, cucumber, long beans and lettuce are often served alongside larb and tam to cool the mouth. Many yam are also classic kap klaem, food to go with drinks, which is why they tend to be bold, salty and hot. Make them that way, then let the rice and the rest of the table bring them back into balance.