2
Place the rib racks in a large roasting tin and pour in 3 litres of water, then add the salt, peppercorns and bay leaves. Cover the tin with foil, transfer to the oven and cook for about 11⁄2 hours, or until the ribs are very soft and tender – you should be able to pull out a bone quite easily. Remove the ribs from the tin and leave to cool for an hour or so to firm up