Step 1

Step 1.Use a mortar and pestle to lightly bruise the chillies. Set aside for later.

Step 2

Step 2.Place 4 cups of water, lemongrass, galangal and makrut lime leaves in a saucepan over high heat. Bring to the boil and simmer for 2-3 minutes to infuse the flavours. Then add the prawns, tomatoes and mushrooms and chillies. Add the evaporated milk and the nam prik pao. Stir through to dissolve the nam prik pao. Simmer until prawns are just cooked.

Step 3

Step 3.Turn the heat off and add the fish sauce, lime juice and sugar. Taste and season with extra fish sauce or lime juice to taste. The flavour should be tangy, salty and spicy.

Step 4

Step 4.Just before serving, stir through the coriander.

Step 5

Notes: – Nam Prik Pao is a concentrated roasted Thai chilli jam. It often includes chillies, garlic, shallots, dried shrimp and shrimp paste. It’s available from Asian grocery stores or try Amazon or online Thai supermarkets.