Start by slicing the chicken thighs into bite-sized pieces, removing any visible fat. Coat the chicken in fish sauce, the juice of half a lime and brown sugar. If you have time to marinade this for an hour, that would be even better!
Add 1 tbsp of olive oil to a large saucepan on a high heat. Wait until the oil is hot and then add the chicken, leave for around 4 minutes so that the chicken has a chance to brown
Reduce the heat to medium, then add the green thai curry paste. Fry for a further 4 minutes to sweat out the aromatics.
After around 4 minutes, add the coconut milk and chicken stock. Reduce to a low simmer for 20 minutes.
After this time add the mangetout & cavolo nero (destemmed and torn into bite-sized pieces). Don’t worry- it might look like a lot of cavolo nero at the beginning but as it wilts down it will reduce in size. I do like my curry to be bulked out as much as possible though so if you don’t want the cavolo nero to be a prominent ingredient, add half the bag. Cook for a further 5 minutes, then add the juice of half a lime.
Serve up with a portion of rice and top with fresh mint, spring onion & chilli flakes.