Pressed tongue The traditional way is to brine it for 24 hours, boil in fresh water for a minute, throw the water away, refill with fresh water bay leaves and peppercorns, bring to a rolling boil for about 2 hours until the skin is blistered and raising. Allow to cool in the water covered with a lid.
While still warm remove the skin with a sharp knife, tidy up the ragged edge around the root, remove the bone and put the whole thing in a pudding bowl, which looks as though it is a bit too small, a 1 pint bowl should be spot on depending on the size of the beast, put a saucer or small plate on top and then weigh it down. My Gran used the weights off her scales but you could use a brick covered in clingfilm.
Put it in a cool place overnight then slice for your sandwiches as required, this should keep for a week in the fridge.
If you are still feeling a bit squeamish remember, a tongue is only a muscle and is practically fat free.
You could add the holy trinity (garlic ginger and chilli) or any other combination of herbs and spices to the boiling liquor to bring it into the 21st century if you wanted to.