Pretty much anything I eat now, but particularlyl
Herbs that taste of plants rather than dust and sadness and were only used after washing off the coating of grease and dust from the lids because they came with the spice rack in 1978 and weren't used up yet,
Fresh fish,
Vegetables that weren't out of a tin (I still love Marrowfats and carrots, they're just different) and
Anything that wasn't cooked to a second death or burned to buggery in the pursuit of Killing All Worms (and Watercress was completely forbidden)
Drinking milk. The number of clumps I got for taking a crafty swig when there was a Sodastream and squashes available was ridiculous.
Conversely, a lot of things that cost a fortune or are largely unobtainable outside a specialist retailer were regarded as poor people's food (with an extra element of racism relating to anything that could be picked, foraged or poached in the UK - think a nasty G word and mutterings of stealing babies). This meant things like;
Raspberries
Blackberries
Gooseberries
Red, white or blackcurrants
Chestnuts
Plums
Cherry Plums
Anything made with Rosehips or Crab Apples
Quinces
Medlars
Samphire and other sea veg
Seaweed
Shellfish
Anything other than Cod or Salmon. Even Haddock or Trout - she would have been incandescent at the thought of actually being offered Coley, Guernard or Monkfish. Oh, except Turbot and Roc Salmon. Which, according to her, wasn't a Dogfish/Shark, it was a special posh fish just for grownups that magically didn't have bones but that didn't make it a non cartilaginous fish in the Shark and Dogfish order. Mainly because saying non cartilaginous would have been beyond her
Rabbit and Hare
Pheasant, Partridge, Duck, Goose or other Game
Butter (Margarine was the refined choice)
Non Homogenised milk. Having a layer of cream on the top was common and my Grandfather was to be informed this every time she saw a bottle of Gold Top in the larder, along with instructions to buy a nice tub of Stork rather than butter churned within two miles of his home
Crusty bread/Oats/Barley/Rye/Sourdough
Anything 'foreign'.
In addition, salt was evil. Not a single scrap of it was to come in the house unless it was for killing slugs and Sea Salt would have been even worse, as that could be made for free/was obviously riddled with fish parasites.
No wonder I was regarded as a fussy child. I just hadn't found food I liked yet.