1 green chilli, finely chopped
1陆 tbsp desiccated coconut
10 curry leaves (available from Asian grocers and some supermarkets)
6 garlic cloves, finely chopped
7.5cm/3in piece root ginger, roughly chopped
1 onion, finely chopped
2 tsp balsamic vinegar
6 cardamom pods, lightly crushed
陆 tsp chilli powder
1 tsp ground coriander
1 tsp ground cumin
2 tsp garam masala
1 tsp black mustard seeds
陆 tsp salt
2 tsp sugar
1 tbsp vegetable oil
3 tbsp plain yoghurt
4 x 200g/7oz white fish fillets (monkfish, haddock, hake, cod or similar)