You will need

* 21 oz prawns
* 2 medium onions
* 4 medium tomatoes
* 4 Tbsp vegetable oil
* 2 cinnamon sticks
* 4 cardamom pods
* 4 cloves
* 2 green chillies
* 2 Tbsp ginger and garlic paste
* some salt
* half tsp turmeric powder
* 1 tsp red chilli powder
* 1 tsp coriander powder
* 1 Tbsp cumin powder
* 1 Tbsp tomato paste
* 2 1?8 cups (1 pint) hot water
* half tsp garam masala powder
* half coriander leaves
* 1 knife
* 1 tablespoon
* 1 teaspoon
* 1 large non-sticky pan
* 1 cup
* 1 spatula