Roujiamo (Chinese Burger)

Roujiamo, Xi'an's ancient answer to the sandwich, ranks as one of the oldest fast foods in human history, dating back to the Zhou dynasty over 2,500 years ago. It features slow-braised pork belly with star anise and cinnamon, stuffed into a baked flatbread that is 30% denser than a standard hamburger bun, yielding a chewier, more satisfying bite. Its historical pedigree and hearty construction make it a foundational street food still beloved today.