4 tbs vegetable oil
1 shallot, chopped
4 cm piece of galangal, finely chopped
2 stalks lemon grass, finely chopped
1 small fresh chilli pepper, seeded and chopped
125 ml coconut milk
2 tsp fish sauce (nam pla)
5 chilantro (leaf coriander) twigs
About 350 g fish fillets, for example from a small flounder or sole or other flatfish
1 small onion, sliced
Freshly ground black pepper
Heat 1 tbs oil in a wok and add shallot, galangal, lemon grass and chilli. Stir-fry for about 3 minutes, until the stuff begins to brown slightly. Put into a food processor, add coconut milk, fish sauce and the stalks from the chilantro and blend (purée?) well. Put the fish into a heat-proof, shallow bowl that fits into the mouth of a saucepan, and pour the sauce over it. Cover the bowl, put on top of a saucepan with boiling water, and steam for 8-10 minutes.
Meanwhile, heat the remaining oil in the wok at medium heat. Add the onion and fry, stirring occasionally, until browned. Remove from the wok with a slotted spoon and drain on kitchen paper. Put the chilantro leaves in the wok and fry for a few seconds. Remove like the onion and drain on kitchen paper. Serve the fish with the chilantro leaves and onion sprinkled on top and plenty of ground black pepper on top of that.