I can't say why or how, but a couple days ago I was fishing around in the rear of the freezer and lo and behold, I found a ham....Now thst iwas at least 15-16 lbs...Then i read the date code...UH...Hmmmm, says use by 1-1-2010...Well it's been hard frozen for a LONG LONG time...so why not see if it's any good! I partialyy thawed it on the shelf for a few hours, then carefully unwrapped and started to sniff that thing like a cat.... It smelled ok,....but was still not completely thawed...I put in a roater pan, covered it with foil and popped in in the oven at 350 F. I took a nap. When I woke, it was to a smell of pure ecstasy! It was done in 3 1/2 hous ( pre-cooked) and ready to sample...I cut a few slices then tasted further and further, all the way to the center next to the bone. It was great! 4 of us dined on that thing for 3 days....I just finished the last of it with some scrambled eggs.... So, you never know, IF a pre-cooked and hard frozen ham can last a year PAST the eat by/use by date.... But little good that would do, IF there is no electrcity, or I am not near my propane fridge! Either or, it's a good thing to know!