– 300g basmati rice – 1 tbsp sunflower or vegetable oil – 2 large onions, sliced – 2 garlic cloves, chopped – 450g tomatoes, cut into chunk – 3 tbsp tikka curry paste – 400g can coconut milk – 4 skinless, boneless pollock fillets (about 150g/51/2oz each), or other sustainable white fish, cut into 4cm/11/2in chunk – ½ small pack coriander, roughly chopped