At teacher training college in the early 80s I ate many "Meals from hell" in the canteen. Our meals were already paid for so we were prisoners! A typical example one evening was as follows:

Soya meat chicken cubes in a white sauce.
Leeks in -probably the same- tasteless white sauce.
Mashed potatoes(large, icy lumps, held together by "glue")
A spoonful of tinned tomatoes.

Tinned "fruit salad" (mainly mushy pears and rubbery peaches)
"Blancmange"


Mmm, yummy. The indigestion and nausea come flooding back!