1 - step 1 Cook the noodles following pack instructions.

2 - Refresh in cold water and drain well.

3 - step 2 Put the stock in a large saucepan and stir in the curry paste, lime leaves, fish sauce and 250ml cold water.

4 - Bring to a simmer and cook for 5 mins.

5 - step 3 Cut the fish into roughly 3cm cubes and add to the pan.