2) Add the spices and toast for 10 seconds and then add the tomato puree. Stir well and then add the chicken, turning it frequently as it cooks.
3) Add the tomatoes, potatoes, coriander and water and mix well. Bring to a boil and then reduce the heat to a simmer. Cover with a lid and cook for about 20 to 25 minutes, until the chicken is cooked through.
4) Serve piping hot with rice.