I'd have killed for proper instant mash. It did at least taste of something - not potatoes, of course - but something. No, school dinners had the weird knack of forming mash into dense, odd-smelling balls that didn't really taste of anything at all.
It's the gristly, sub-Tyne brand mince that haunts my nightmares. Occasionally they'd throw a bit of crappy, lard-laden pastry on top of it and call it a pie.
Sausage and mash was a good day. Crappy, catering pack sausages and the aforementioned mash, but at least they'd throw gravy over it. A bad day was a piece of liver you could sole your show with accompanied by tinned boiled potatoes.
Fridays at least you got fish and chips. Weird fish and shít, cold chips, but still.