Mix all ingredients apart from the mince (ground lamb) in a large bowl.
Add the mince and either using a large spoon or your hands, make sure all the ingredients are well combined.
Form the mince into a long, chunky rectangle, patting to make the shape.
Cover in tin foil (I use a double wrapping to keep all the juices in) and place in your slow-cooker.
Set to either cook on low for six hours, or on high for four.
When the kebab is ready, remove the foil (be careful because the juices inside are hot). If you like making your own stock, retain these juices.
Allow to cool for five or so minutes, then cut into very thin slices using a sharp knife (I found a serrated edge worked better).
When sliced, keep the kebab wrapped in the foil until ready to eat, as it does dry out quickly.