I'm a vegetarian but I often get Tofurkey, Soysage, etc. at re-supply in winter. In summer, I'll do it for a first night out.
I did a hundred miles or so with a couple of thru hikers in '08 that bought a pack of hotdogs at every town along with a 12 pack.
They would carry both up to 20 miles and eat them (and drink) that night and pack out the empties (this was in VA and Shenandoah).