madras

2 tbsp vegetable oil 2 tsp brown mustard seeds 1 large onion, finely chopped 700 g boneless chicken thighs 3 cloves of garlic, thinly sliced 1 heaped tbsp grated fresh ginger 2-4 small green chillies, left whole 20 curry leaves 1-2 tsp chilli powder 1 ½ tbsp garam masala 1 x 400g can...