School dinner smell for me was mashed potatoes, overcooked cabbage, and sloppy mince, or rissoles, and gravy.
Followed by custard, which we had with everything except sago (frogspawn) pudding, where you got a dollop of jam.
I still can't bear school dinner smells.
Still hate gravy and custard, and don't you DARE serve me an ice cream scoop of badly mashed potatoes with no milk or butter in them.!
We could tell what day of the week it was by what was for school dinner, they changed the menu each term...I don't like meat, I have never, ever, liked meat, so I used to ask the Dinner ladies just to give me gravy. The only time I didn't was the mince pie day. Puff pastry

We had a lot of stews, by the end of the week they added sausages and made stovies...big chunks of carrots, stewed long and sweet and tasty in the gravy.
I loved the rhubarb tart with custard

or the sponge and custard, especially if they dolloped stewed apples on top

the dumpling was pretty good, but they didn't make those often. I liked it when they baked the rice or sago pudding, not keen otherwise. Sometimes they gave us a bit of a tray bake instead of a pudding.
The vegetable broth was good. I liked the barley in it.
We didn't get cabbage. No idea why not, I would have remembered because I really like cabbage.
Looking back on it, I don't know how we ever managed to eat all that. We had soup, then main course and then a pudding. I think we spent the afternoon in a calorie induced stupor. We had milk (1/3rd of a pint) at morning interval too.
I think they really did try to give us a decent meal, one way and another there was a lot of food at school. Even into Autumn when we had apples every day for weeks.
I know most of us paid for our school dinners, but there were children who were excused..
It's pretty awful to read that the meal in school is still the main meal for so many children

you'd think we'd be better by now.