So many... I've mostly tried to blank food from my childhood out of my mind.
Tinned ham with plain boiled plough potatoes (all fluffy and dry). Just that. No veg. No moisture. Nothing. Eating it was like being desiccated.
Also mince and tatties. Watery, tasteless mince with bits of boiled carrot and onion floating about in it served with those same boiled plough potatoes. Bleurgh.
Pasta with the consistency of the stuff that comes in tins served with a jar of sauce. I have absolutely no idea how she achieved the weird bloated, soggy pasta. She didn't even cook it for very long.
Cup a soup, especially tomato cup a soup. Even the thought of a cup a soup makes me feel like vomiting.
My mum's 'beef stroganoff'. Huge chunks of undercooked mushroom and onion fried up with chewy strips of minute steak served with a sauce made from a bit of Worcestershire sauce and some cream. I didn't like the sauce (it was crap) so I got strips of chewy meat and some boiled rice for tea.
'Kedgeree' that was essentially boiled rice with peas, sweetcorn and microwaved smoked haddock. It all tasted of sweaty fish.
Anything with fish in it, actually. I have memories of sobbing over being made to eat horrible dry slabs of fish served with boiled floury potatoes (no sauce).
At 12 I decided to become vegetarian purely to opt out of this stuff. Instead I got microwaveable veggie lasagne for several years.