Lived in Europe for a while and brought back this observation about sandwiches:
There, they emphasize the bread. A bit light on the meats, and the main (even only) condiment is butter. The sandwiches aren’t very big, and can be easily and gracefully eaten while waking. The sandwich is usually served solo.
Here, we emphasize the meats. The bread tends to be pedestrian. We lard the sammies with all kinds of condiments (including, in some parts surely, lard) and other accoutrements. It’s usually best eaten sitting down, lest we end up with stuff on our shirts. The meal wouldn’t be complete without a bag of chips and an XL soda.
Not judging either way. There’s a time and place for everything. But interesting differences.
(Some of the best sandwiches I’ve had abroad: porchetta and arugula in Italy, fried fish in Turkey, classic jambon beurre in France. Never tried a currywurst in Germany, but I hear they’re good.)