Pan-Thai — legume and seed frying is a technique used throughout all regional Thai cuisines
Thai fried legumes — peanuts (tua lisong), cashews (med mamuang himaphan), and pumpkin seeds (med fak thong) — are used throughout Thai cooking not only as ingredients but as textural components, garnishes, and flavour bridges between dressing and protein. The frying technique for each differs: peanuts are fried from cold oil to achieve even cooking without burning; cashews require 160°C controlled frying; pumpkin seeds are dry-toasted in a pan. Understanding these small-scale frying techniques is foundational — poorly fried peanuts (burnt, pale, or oil-logged) degrade the dishes that depend on them as garnish or component.
Properly fried peanuts in a som tam are structural — they provide the crunch, the fat, and the nuttiness that balances the lime-papaya-chilli composition. Under-fired peanuts produce a flat, soft result that undermines the entire salad.
{"Peanuts: start in cold oil, bring to 160°C, remove when just golden — they continue darkening after removal","Cashews: 160°C pre-heated oil, 2–3 minutes until pale gold — remove well before they look done","Pumpkin seeds: dry pan, medium heat, constant movement until they pop and smell nutty","All nuts and seeds should be drained and cooled on paper towels, never salted while hot","Salting while hot draws moisture from the surface and makes them less crispy within minutes"}
Fried peanuts stored in an airtight container at room temperature will maintain crunch for 3–4 days. Refrigeration makes them absorb moisture and go soft. For service batches, fry in advance and store uncovered at room temperature until service — this is counter-intuitive but correct.
{"Frying peanuts in hot oil — the outside burns before the centre is crunchy","Salting nuts while hot — immediate loss of crispness","Under-frying cashews to pale ivory — they continue to darken significantly and an under-done cashew lacks flavour","Dry-toasting pumpkin seeds on high heat — they burn on the surface before the interior toasts"}