Coffee is another interesting example in the other direction, it's so often associated with places like Colombia, Java, etc that people don't realize it's only native to Ethiopia, and that the majority of coffee consumed around the world today descends from one specific genetic lineage that was cultivated for a few centuries in Yemen.

Most of that I knew, but I was surprised at the beans. I thought beans were a standard medieval fare.

It turned out that these were fava beans, which stem from the Old World.