Heat the oil over a medium heat and add the turmeric, ginger and garlic. Cook until fragrant. Add the cumin, coriander, chilli powder and cinnamon stick and cook for another couple of minutes.
Add the onion, pepper and chilli and fry until softened. Add the tin of chopped tomatoes. Bring to the boil then reduce to a simmer and add the cooked meat. Simmer until the sauce is thickened and the meat is heated through. Serve with rice.