@MillieEpple
Its been a revelation to me that so many people go shopping daily. I realised lots of people couldnt afford a lot in one go or no l space to store it. But MN opened eyes that a majortiy of people who have the means and space still just buy one or two days food at a time. I grew up somewhere remote with a weekly bus to the nearest town and we could get snowed in so we always had a good store.
I've got rid of my car and live 2 miles from my nearest town so I'm limited by what I can comfortably carry on my bike (there is a Co-Op within walking distance but I prefer to support the independent butchers/fishmongers/greengrocers/bakers). So little and often is the key.
OP, I'm guessing that your question is aimed at the possibility of track and trace asking us to self-isolate which would prevent visits to the shops at a time when delivery slots are difficult to come by. It's a perfectly plausible scenario (unlike the 400 toilet rolls, that's implausible), I don't know why you're getting such a hard time on here.
In answer to your question, the only things in my cupboards which I have in more quantities than usual are pasta and cooking chocolate, in both cases bought a couple of months ago when they were "reduced to clear" so I got them for the cheap deal rather than any kind of stockpiling. I'm down to less than five rolls of toilet roll (all bought last year, bulk packs being cheaper, I don't get through much as I'm single and work lots of overtime so take many of my movements there).
Why am I so blasé about the possibility of having to self-isolate with no access to shops? As I use independent businesses rather than supermarkets its much easier to get a delivery slot so I know that I'd be alright for most things. I've also got around forty leeks ready to dig up and am picking several sprouts per day as they grow big enough so even if my meals might be samey, I won't starve.