Som Tam Pla Raa — Fermented Fish Papaya Salad / ส้มตำปลาร้า

Ingredients

• 400 g green papaya, peeled, seeded, julienned or coarsely shredded
• 2–3 tbsp pla raa (fermented freshwater fish), whole pieces for the traditional version; or simmered and strained to a liquid for the cooked version
• 2–4 fresh bird's eye chillies, to taste
• 2 cloves garlic
• 1–2 tbsp palm sugar, shaved or crumbled
• 2–3 tbsp lime juice, freshly squeezed
• 100 g cherry tomatoes, halved
• 60 g long beans (snake beans), cut into 3–4 cm lengths

Method

1. 1
   If using the cooked pla raa method, place the fermented fish pieces in a small saucepan with a little water and simmer briefly, then strain and reserve the liquid, discarding the solids — simmering tames the rawer, more aggressive edge of the fermentation so the saltiness reads cleaner on the palate. Set aside; the liquid will be pale, funky, and deeply saline, and should smell of fermentation throughout. For the traditional version, reserve the whole pla raa pieces as they are.
2. 2
   Place the chillies and garlic in the mortar and pound with the pestle using the dtam motion — a rhythmic, vertical pounding — until they are broken down to a rough paste, working them together so the garlic mellows slightly into the chilli heat rather than sitting sharp and separate. The mortar should smell sharp and pungent.
3. 3
   Add the long beans and strike them several times to bruise and split them without reducing them to a pulp — cracking them open lets the dressing reach inside the bean rather than sliding off the skin. The beans should hold their shape but be visibly cracked and green-fragrant.
4. 4
   Add the palm sugar and pound briefly to dissolve it into the paste at the base of the mortar, working it in so it binds with the chilli and garlic juices rather than sitting in dry pockets that will never integrate once the wet ingredients arrive. The mixture at the bottom should be moist and cohesive, the sugar no longer granular to the touch.
5. 5
   Add the shredded green papaya in two or three additions, turning and pressing with the pestle and a spoon between each addition so the paste at the base works up through all the strands evenly — bruise the papaya enough to open its fibres and allow it to absorb the dressing, but do not pound it to mush. The strands should remain distinct and lightly translucent at the edges.
6. 6
   Add the cherry tomatoes and press them once or twice with the pestle to burst them and release their juice into the salad, since that juice loosens the paste at the base into a proper dressing that coats every strand of papaya. The base of the mortar should now be visibly sauced — tinted red, pooling around the papaya.
7. 7
   This is where the dish lives or dies. Add the pla raa — either the strained cooking liquid or the raw fermented fish pieces — conservatively at first, then add the lime juice, tasting between each small addition of pla raa because its saltiness is extreme and once overdone cannot be corrected without unbalancing everything else. The balance must answer the fermented saltiness with enough palm sugar to round it and enough lime to lift it; the finished dressing should taste ancient and insistent, not sharp and bright.
8. 8
   Transfer to a plate or serve directly from the mortar alongside sticky rice. If using the traditional version, the fermented fish pieces are present in the finished salad — their texture is part of the dish. Serve immediately.