If using uncooked lamb mince – add the lamb to the saute pan with the vegetables and brown, stirring to break up any lumps. Sprinkle on the flour and mix through. Cook for 1-2 mins, stirring to make sure the mixture does not stick to the bottom of the pan.
Add the stock, tomato ketchup, Worcester sauce, black pepper and cook over a low heat, simmering for approx 45 minutes. Check seasoning and adjust if required.