Jelly, trifle, custard are all things we still eat reasonably regularly.
And my wife regularly has fish fingers (I sometimes do, but less often).
I can't think of much food from my childhood that we don't have now but I would like to.
When I was a teenager I loved Fish Fingers on toast.
My Dad bought Liquorice sticks and we all chewed on them as kids watching 1970's TV.
These things:
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I can triple guarantee that I won't be revisiting Spam fritters anytime soon.