We did some light version of this in elementary school in the 80s, at least at my little public school. There was a thing we did once per six weeks for a day,

We did some light version of this in elementary school in the 80s, at least at my little public school. There was a thing we did once per six weeks for a day, where everyone brought in some unique food they (or their parents) made at home and we discussed them with some cultural background, and tasted each others' food. I can see how in the modern world there would be a lot of barriers to that (safety concerns, allergy concerns, etc).