Pad Cha — Fingerroot Rhizome Stir-Fry / ผัดฉ่า

Ingredients

• 600 g seafood, whole fish, squid, large prawn, or shellfish — robust cuts only
• 80 g fresh or frozen krachai (fingerroot, Boesenbergia rotunda), peeled and julienned into thin strips — not pounded, not pureed
• 30 g fresh green peppercorns on the vine, kept on the vine, whole
• 4 fresh red or green chillies, sliced on the bias
• 6 kaffir lime leaves, torn, central rib removed
• 1 large handful holy basil leaves, picked; added last
• 3 tbsp vegetable oil
• Seasoning
• 2 tbsp fish sauce
• 1 tbsp oyster sauce
• 1 tsp light soy sauce
• 1 tsp sugar

Method

1. 1
   Prepare all components before the wok is lit: peel and julienne the krachai into thin strips, strip the holy basil, tear the kaffir lime leaves, and dry-pat the seafood so that no surface moisture hits the wok and kills the heat. Have the peppercorn vines, sliced chillies, and all measured seasoning liquids within arm's reach, because the dish is done in under two minutes of active heat and there is no pause to search for anything. Nothing is added during cooking that has not already been measured — preparation is the discipline.
2. 2
   Set the wok over the highest available flame and heat until the surface begins to smoke visibly, then add the oil and swirl to coat. Add the krachai strips and the green peppercorn vines immediately, so they contact a surface hot enough to blister and sizzle on impact — this is the cha, the sizzle-splash sound for which the dish is named. Press the peppercorn clusters against the wok surface with a spatula so they blister and char lightly, and let the krachai strips colour at the edges and stiffen slightly; this is where the dish lives or dies, because insufficient heat now means the defining char, smoke, and camphor-floral fragrance are never recovered.
3. 3
   Add the seafood to the smoking wok and toss continuously, keeping everything in constant contact with the hottest surface so the high heat sears rather than steams. Add the sliced chillies and torn kaffir lime leaves, then add the fish sauce, oyster sauce, light soy sauce, and sugar in quick succession, tossing between each addition so the seasonings caramelise against the wok rather than pooling and going flat. The seafood is done when opaque through for prawn and squid, or when the flesh at the bone of a whole fish pulls cleanly — judge by colour and resistance, not by time.
4. 4
   Remove the wok from the flame before adding the holy basil leaves, then fold them through the residual heat only, so they wilt and release their clove-anise fragrance without returning to direct fire, which would blacken them and turn them bitter. The leaves should collapse and perfume the dish within seconds. Plate immediately; pad cha does not hold.