There's a lot more to it than meat though. According to Wikipedia's page on SPAM:
> The ingredients of Spam vary according to variety and market; those of variety "Spam Classic" are pork with ham, salt, water, modified potato starch, sugar, and sodium nitrite.
> The ingredients of Spam vary according to variety and market; those of variety "Spam Classic" are pork with ham, salt, water, modified potato starch, sugar, and sodium nitrite.