Grocery stores are pretty low-margin, and need a certain amount of demand (for the size Americans are used to).
Some convenience stores get moderately close to being a grocery store.
It'd be an interesting experiment to see how few products you could carry (and of course, only one of each type) and have people still willing to shop there.
> It'd be an interesting experiment to see how few products you could carry
Liquor store comes to mind. There are two cigar shops, two wine shops and a beer shop downtown. Just weird priorities I guess.
I meant specifically what the smallest size you could get and people would still see you as a grocery store.
Basically, what is the minimum things you need for them to carry?