Step 1

To make the Thai green curry paste, put the lemon grass and lime juice into a small bowl and leave to soak for 30 mins. Put a small pan over a medium heat and add the peppercorns, coriander and cumin seeds. Dry fry for about 1 minute until fragrant then tip onto a saucer to cool.

Step 2

Put the lemongrass, spices and all remaining curry paste ingredients into a mini food blender or small food processor and pulse the mixture. Scrape down the sides from time to time. Process as smooth as you can – the mixture will be slightly coarse and not as green as the purchased variety. Put the paste into a lidded jar and store in the fridge up to a week or freeze in portions.

Step 3

To make the curry, open the cans of coconut milk and carefully remove the thick cream and spoon it into a warm wok or large frying pan (see tip below). Cook it slowly, stirring all the time, until it reduces to a thick paste and the oil starts to separate. Add the green curry paste and cook for 1-2 mins. Add the chicken and stir until well coated in the paste.

Step 4

Slowly add the coconut water remaining in the cans together with the chicken stock. Add all the remaining ingredients and cook over a medium heat for about 10 mins until the chicken is cooked. Add more stock if necessary - the sauce should be slightly thinner than single cream.

Step 5

To serve spoon some rice into a bowl, pour over the curry and sprinkle with the coriander leaves, sliced chilli and spring onion. Add a wedge of lime on the side.