If this article is to be believed then this could be the world’s expensive leg of lamb. It has gone on sale at Selfridges £1,800 for a leg. This is no ordinary ham, however, it weighs 7kg and comes with its own DNA certificate as proof of authenticity. The ham comes from one of just 50 carefully selected pigs that have been reared in Extremadura in western Spain. The pigs were fed a diet of acorns and roots to give the ham a distinctive flavour. After being slaughtered the ham was then salted and cured for three years before going on sale. According to the Selfridges fresh food buyer connoisseurs will appreciate the hams melt in the mouth texture.