Fisherman’s curry

INGREDIENTS

• juice 1 lemon
• 750g boneless, skinless firm white fish , cut into large pieces
• 1 tbsp vegetable oil
• 1 cinnamon stick
• 4 whole cloves
• 4 green cardamom pods
• ½ tsp whole black peppercorns
• 10 fresh curry leaves
• 2 onions , chopped
• 3 green chillies , finely chopped
• 1 tbsp grated ginger
• 4 garlic cloves , finely chopped
• 6 tomatoes , chopped or a 400g can chopped tomatoes
• 1 tsp turmeric
• ½ tsp chilli powder
• 2 tsp ground coriander