Lao-style green papaya and pomelo salad pounded in a mortar with fish sauce, lime, dried shrimp, and fresh chilies — brighter and fruitier than the Thai version.
Tam som is the Lao version of the green papaya salad that spawned one of the world's most famous street-food dishes (Thai som tum). In its homeland of Laos, the salad is made in a large stone mortar, and unlike the Thai version which is almost always papaya-only, Lao tam som frequently incorporates pomelo segments, fermented fish (padaek), dried shrimp, and padaek brine for a funkier, more complex flavor. The pounding technique (tam) is not just for show — it gently bruises rather than purees the ingredients, releasing juices while maintaining texture. Lao tam som also frequently includes a handful of cherry tomatoes, long beans, and sometimes sliced banana blossom, creating a more substantial salad than its Thai cousin. The result is a bright, funky, fiery, sour explosion that Lao people eat several times a week as both a snack and a side dish.
Serves 4
Place chilies and garlic in a large stone mortar. Pound to a rough paste — no need to be completely smooth.
Add dried shrimp and pound briefly to break them up.
Add lime juice, fish sauce, padaek, and palm sugar. Mix with the pestle to combine and dissolve the sugar.
Add long beans and tomatoes. Pound gently — just enough to bruise the beans and burst the tomatoes slightly. Add papaya and toss with the pestle and a spoon rather than pounding hard.
Lao tam som should retain more texture than Thai som tum — resist over-pounding.
Fold in pomelo segments gently by hand — they break apart easily and should remain in distinct pieces.
Taste: it should be sour, salty, sweet, and fiery in roughly that order. Adjust lime juice, fish sauce, or sugar. Top with roasted peanuts and serve immediately.
Use a large stone mortar — the salad needs room to be tossed and bruised, not pulverized.
Green (unripe) papaya is essential; ripe papaya becomes mush when pounded.
Padaek's funky depth is what distinguishes Lao tam som from Thai versions — even a small amount transforms the flavor.
Tam maak huong (green mango version): use julienned unripe mango instead of papaya.
Vegetarian tam som: replace dried shrimp and padaek with extra lime juice and a teaspoon of miso.
Tam som should be eaten within 30 minutes of making — the acid wilts the papaya quickly and it becomes watery. Do not refrigerate.
Tam som (and its relatives tum mak hoong, som tum) is believed to have originated in the Lao-speaking regions of what is now northeastern Thailand and Laos, where unripe papaya, fermented fish, and fresh lime are all readily available year-round. The dish spread from Laos to Thailand's Isan region with Lao migration in the 17th-19th centuries and from there — renamed som tum — became one of the world's most internationally recognized Thai dishes, somewhat obscuring its Lao origins.
Ideally yes — a large granite mortar allows the pounding action that bruises without pureeing. In a pinch, use a bowl and the end of a rolling pin. A food processor will overly shred the papaya.
Julienned kohlrabi or green mango is the closest substitute in terms of texture and tartness. Shredded green cabbage works but lacks the slight bitterness of papaya.
Very spicy by most standards. Lao people typically use 3-5 bird's eye chilies per serving. Start with 2 and increase to tolerance — the sourness of lime juice tempers the heat significantly.
Per serving (200g / 7.1 oz) · 4 servings total
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