Gaeng Kua Cha-Om (Acacia Leaf Omelette Curry)

Strip the cha-om leaves from their stems and tear them roughly, so that the leaf surface is open and will bond with the egg rather than sitting as sealed bundles inside the omelette. Beat the eggs with the fish sauce until fully combined, then stir in the torn leaves. The raw leaves carry a mildly sulphurous, slightly fermented aroma at this stage; this is correct.

Heat the oil in a wok or heavy frying pan over high heat until shimmering, then pour in the egg and cha-om mixture and press it flat into a thick disc — pressing it flat ensures even contact with the pan so the omelette colours uniformly rather than browning at the edges while the centre steams pale. Fry without moving until the underside is set and deeply golden, then turn once and cook the second side to the same colour. The omelette is done when both faces are firm and golden-brown and the cha-om aroma — raw and sulphurous — has moderated to a deeply savoury note. This is where the dish lives or dies: an under-fried omelette will deliver raw cha-om sharpness into the curry; an over-fried one will be leathery after simmering.

Remove the omelette from the pan and allow it to cool briefly so it firms up enough to cut cleanly without tearing. Cut it into quarters or rough pieces of similar size, so that each portion of curry will receive a piece.

In a clean wok or saucepan, warm a ladleful of the coconut milk over medium heat, then add the gaeng kua paste and fry, stirring, until the paste is fragrant and the coconut milk has reduced around it to a thickened, aromatic mass — frying the paste in coconut milk rather than oil alone draws out the fat-soluble colour and perfume of the dried chillies so the finished curry is vivid rather than dull. The curry is ready for liquid when the paste smells cooked rather than raw and the oil begins to separate at the edges.

Pour in the remaining coconut milk and bring to a gentle simmer. Season with fish sauce. The curry should be a clear yellow-orange colour and smell of fried paste and rich coconut.

Add the omelette pieces to the simmering curry and cook briefly — long enough to heat the omelette through and allow it to absorb the curry, but not so long that the pieces break apart — since the omelette will continue to soften in the hot broth and will lose its texture if left unattended. The omelette is ready when it has taken on the yellow-orange colour of the curry at its edges and the broth tastes of both coconut and the savoury depth of the cha-om.