Imagine (or remember) living in a strange country that doesn't stock the day to day items that you're used to in the stores.
When I first went to live in Spain I'd happily walk an hour and a half to a bar that served Brooke-Bond PG Tips Tea. (Stereotypically English but there y'go)
I knew a guy from Cali back in the 70s that would drive 120 miles to the only place in England where he could find Bick's Corn Relish (It's everywhere now.
So what product would you miss if you had to live overseas?