The pig - all of it - is the mainstay of the Christmas dinner with ham being top of the list. The various parts are turned into several dishes: cheeks & trotters (brawn), ribs (glazed and roasted), shoulder (smoked), belly (salted & smoked) guts (sausage skin), just about everything else (sausage). The pigs head is, today, purely decorative but an essential part of the festivities. Artificial ones come in all sorts of materials and sizes. They are decorated yearly and the icing removed before being stored for the following year. I think the tradition is dying out. None of the children use them.
You can buy all the dishes ready made but we always do our own ham, ribs and sausage.