Cold pork

"William and John left for Yorkshire at half past two this afternoon, cold pork in their pockets." Thus opens Dorothy Wordsworth's Grasmere Journal, and it inspired me, many years ago, to make a point of carrying a cold pork product of some description on a walk of any distance: a Scotch Egg, a Kabanos, Italian salami... Possibly the only thing I haven't taken is the remains of a joint of pork which is, presumably, what William Wordsworth took with him that Sunday afternoon, leaving his sorrowful sister behind him.