Eric Treuille’s Thai lime and coconut chicken

2 lemon grass stalks

3 fresh green chillies, seeded and chopped

2 garlic cloves, chopped

3 spring onions, chopped

1 handful fresh coriander leaves

½ tsp ground cumin

½ tsp ground white pepper

½ tsp turmeric

1 tsp ground coriander

grated zest of 1 lime

3 tbsp lime juice

2 tsp grated fresh ginger

1 tbsp fish sauce

125ml coconut milk

8 boneless, skinless organic chicken breasts, butterflied

salt and black pepper fresh

mango or papaya Sambal 

little gem lettuces, to serve