The usual origin story traces it to boat trackers on the Yangtze near Leshan in Sichuan, who boiled whatever scraps they had in a pot of chili-and-peppercorn broth on the riverbank.
Diners pick skewered or loose ingredients from a self-serve display, hand them to a vendor who boils them in a shared pot of numbing, spicy broth, then eat on the spot.
Chuan'r (Grilled Meat Skewers)
Youtiao (Fried Dough Stick)
Tanghulu (Candied Hawthorn Skewers)
Douzhir (Fermented Mung Bean Milk)