The old shops' formula is summed up in one line, 'eight spices plus old broth': the chickens are simmered in a long-kept master stock rather than a fresh one.
Whole chickens are simmered in the spiced aged broth until the meat is tender and fragrant but not greasy, and so loose on the bone that it can be pulled apart by hand. It is eaten hot or cold, no utensils needed.
Chuan'r (Grilled Meat Skewers)
Youtiao (Fried Dough Stick)
Tanghulu (Candied Hawthorn Skewers)
Malatang (Self-Serve Spicy Broth)