Method
Pre-heat a frying pan over a medium heat, and dry-fry the cumin and coriander seeds until they start to brown. Crush with a pestle and mortar.
In a casserole dish that can go on the stove, heat 1 tablespoon of oil and gently fry the onions until soft. Add the garlic and cook for 1 minute, followed by the crushed spices and allspice. Add the stock , then tomato puree, chilli, chocolate powder, sugar, chickpeas and seasoning and bring to a simmer.
Meanwhile, heat the rest of the oil in a frying pan and brown the lamb. Add the lamb to the casserole, put on the lid and cook in a low oven, 140oC, for two hours.
