Spam was temporarily pulled from its post as a wartime staple in the early 1990s. Processing techniques allow it to keep for many years without refrigeration, so it had enjoyed a long tenure as a military mainstay. But as the Gulf War heated up, Saudi authorities requested that American troops part with their favorite canned cuisine. Islamic dietary laws forbid the consumption of pork — the key component of Spam. And thus, the Saudi government asked Americans heading into Saudi Arabia to leave the gastronomic go-to at home.