Caobao Soup Buns

In the summer of 1937, immediately after the Marco Polo Bridge Incident forced cook Zhang Wenhan to flee Luokou for Jinan's walled city, he borrowed five sacks of flour from physician Zhang Shuozhai and rented two rooms on Taiping Temple Street inside the west gate. Before opening day, Zhang Shuozhai refused to give the shop a grand name: 'Caobao is already quite fitting,' enshrining the owner's nickname—meaning 'simpleton'—as the brand. Zhang had trained at Jixhen Garden restaurant in Luokou and applied classical Shandong technique to his own filling formula: hand-chopped pork (never ground), bamboo shoot dice, steamed egg-cake dice, and pork-knuckle stock that set overnight to gelatin. The 18-pleated chrysanthemum top became the house trademark. Within months the buns were famous across Jinan; the shop has operated continuously for nearly 90 years.

You bite through a silky-thin, slightly chewy wrapper and hot broth floods the mouth before the filling arrives—hand-cut pork with a coarser, more satisfying texture than ground meat, bamboo shoots giving a clean crunch, the liquefied gelatin surrounding everything in a clean pork sweetness.

The soup inside is a delayed-release solid: pork-knuckle stock, reduced to high collagen concentration, gels at refrigerator temperature but melts above 36°C. Wrapped inside raw dough, the gelatin cube steams alongside the bun. By the time the wrapper is cooked (about 12 minutes), all gelatin has liquefied into hot broth. Hand-chopping rather than grinding preserves the meat's cellular structure; cut fibers retain more juice and produce a firmer, more satisfying bite than mechanically broken muscle tissue.