2 tbsp vegetable oil
450g boneless skinless chicken thighs, cut into chunks
3 tbsp coarsely chopped garlic
3 tbsp finely sliced shallots
3 fresh green or red chillies, seeded and finely shredded
2 tbsp fish sauce (nam pla)
2 tsp dark soy sauce
2 tsp sugar
a large handful of Thai or ordinary basil leaves