No the best metaphor is trademark. When you buy an Apple product, you don't expect some cheap Chinese rip off inside of a package with an Apple logo. Same here, except that the trademark doesn't belong to a corporation.
Quoting myself: Trademarks on food are fine. That matches onto parmesan, champagne, etc. I'm all for it. That has nothing to do with restricting the export of the pigs. Protect the name, sure. Don't let them call it jamón ibérico armericano [sic]. But let them have the pigs and see what they can do with it.