It was only after ground beef was introduced to the U.S. via German immigrants (which is why ground meat is called hamburger in the first place), that it became common to serve ground meat on buns ...

The hamburger bun did not exist yet, so we used Leni's freshly baked white sandwich bread, sliced thinly to maximize the number of slices, as any enterprising food vendor might.

The hamburger's affordability is a relatively recent development in the food's history. If you're interested in dining as the Romans did, you can find the recipe for isicia omentata online . Fries ...