I think butchers here still use the word flitch, then there is the famous Dunmow flitch.

The Dunmow Flitch Trials is one of the few genuine famous folk ceremonies left in this materialistic age. The trial requires a married couple to stand before a mock court, and prove that they have, for a year and a day, 'not wished themselves unwed' If they are able to do so, to the satisfaction of the judge and jury (six maidens and six bachelors of Dunmow), then they are awarded half a pig, known as a 'flitch' of bacon.

http://www.saffire.org.uk/saffire/history/flitch.html