From here: Spam (food) - Wikipedia, the free encyclopedia
It's even got gelatin! Okay, so it's 80/20. Bologna is nowadays just icky, but I indulge occasionally.The labeled ingredients in the classic variety of Spam are chopped pork shoulder meat, with ham meat added, salt, water, modified potato starch as a binder, sugar, and sodium nitrite as a preservative. Spam's gelatinous glaze, or aspic, forms from the cooling of meat stock.