1 - step 1 Put the prawns in a bowl.

2 - Put the chilli, garlic, coriander stalks (snip these up using scissors first) and caster sugar in a spice grinder or small food processor and whizz together.

3 - Add half of the lime juice and the fish sauce, then pour this over the prawns.

4 - step 2 Heat 1 tbsp oil in a wok, add the ginger and spring onions and fry for 1 min.

5 - Add the red pepper and fry for 1 min, until the pepper starts to soften.