I have not thought about Salisbury steak since school days.
Although everyone complained about cafeteria food, Salisbury steak was actually kind of tasty.
When I was in grade school, back when California was a red state, Salisbury steak—with “whipped potatoes” (not mashed potatoes—these were run through a blender) was on the menu every week. It was one of my favorite meals, along with white fish, which was served every Friday.