Instead of looking for ham to add to the lentil soup,try cutting up some of the smoked bacon,[including the rind] that is not too hard to find here now.Tastes very much like the soup my old Gran used to make 50 something years ago,[NO it hasn't been maturing all that time]You can also use some of the offcuts from the small gammon joints that have been smuggled over in the suitcase.LOL