Step 1:
You will need

* 17 fl oz coconut milk
* 17 fl oz chicken stock
* 5 cm of galangal , peeled and chopped, (or ginger)
* 4 lemongrass stalks , thinly sliced
* 2 kafir lime leaves
* 1 large chicken breast , cubed
* 2 green chillies , sliced
* 4 Tbsp fish sauce
* 1 Tbsp brown sugar
* a few sprigs of coriander
* 1 lime , halved
* 1 saucepan
* 1 wooden spoon
* 1 ladle

Step 2:
Begin the stock
Put the coconut milk, stock, galangal or ginger, lemongrass and the lime leaves into the saucepan and bring to a simmer. Cook for 5 minutes.
Step 3:
Finish the soup
Now add the chicken, the chillies, the fish sauce and the sugar and bring to a boil. Cook it for another 7-10 minutes.
Step 4:
Garnish and serve
Finally, ladle the soup into a bowl, add a squeeze of lime and garnish with coriander. Serve.
Remember that the lemongrass and the lime leaves are not to be eaten. They are only for flavour!