It dawned on me ages ago, that if you want something done to a specific standard, you either: do it yourself OR give specific instructions. Not 'stop at the shop and buy some dinner'. It can mean different things to different people
If I'd say it to my partner, he'd shop according to himself and I'd get ONLY uber healthy stuff, lots of veg, fish, legumes, eggs. No pasta, no bread, no meat and definitely nothing sugary. He's a great cook, but eats very healthy, no UPFs. So do I most of the time, but I like some crap when I'm ill, biscuits, etc, so I'd have to spell it out for him, it would never occur to him to grab some digestives or whatnot, he never eats them.
If I'd ask my dad, it would be meat heavy, some veg, potatoes. No treats, no sweet stuff, no drinks (squash, juice, etc), no fruits as he never eats those.
My mother is a mother Theresa type, a feeder and loves to nurse sick people. And also a big spender. If I'd ask food for two days, she'd bring shopping for pretty much a month to feed an army. Everything, including obscure items I've never even heard of, 'just because someone might want that'.
My grandma is an absolute Scrooge, she'd bring cheapest possible value stuff, possibly out of date and very little of it, suitable for a small child. Whatever items, could be a random selection of stuff just because they were yellow-stickered.
All these 4 people know DD and me and know what we eat.
So yea, I'd either do online shop, or I'd give very clear, detailed instructions, if I wanted something specific from somewhere specific.