Heat a dash of oil in a fry-pan over medium high heat. Add the lamb mince and cook for 5 minutes until golden brown. Add onion and garlic and cook for a further 2 to 3 minutes. Add the cumin, allspice, mint, water and tomato paste. Bring to the boil and simmer for 12 to 15 minutes until the liquid has evaporated and the lamb is tender. Stir in ¼ cup chopped coriander. Allow to cool slightly.