Laver is a fine seaweed collected for consumption along the Welsh coastline. Welsh laverbread or "bara lawr" has nothing to do with bread and is rather like a purée and is most commonly enjoyed with shellfish or on hot buttered toast.
Replace the Ham bone with a tin of Laverbread? Recipe: Cuban Black Bean Soup — Recipes from The Kitchn
Welsh Recipes: Welsh Lamb with laverbread herb sauce https://www.facebook.com/photo.php?fbid=517638484925123=a.577945008894470.1073741826.131420090213633=3=https%3A%2F%2Ffbcdn-sphotos-h-a.akamaihd.net%2Fhphotos-ak-prn1%2F23362_517638484925123_455728511_n.jpg=707%2C215