Army mess hall "Swiss steak" obviously was not soylent green. Only a few experienced army cooks could beat this beef(?) into sumission where it was something edible. Well, it might have been edible, but it was not chewable. We used to joke that the army would have saved a fortune by using "Swiss steak" to make truck tires* because they would never wear out.
*Nostalgia: pounding on a deuce & a half wheel with sledge hammers to break the bead of a tire that needed to be replaced. And of course, the ironically named safety ring that could kill a mechanic.