Lurou huoshao

The donkey burger is a kind of sandwich commonly eaten in Baoding and Hejian, Hebei Province, China, where it is considered a local specialty, though it may also be found in other parts of China, particularly in northeastern China. Chopped or shredded donkey meat or offal is placed within a huǒshāo or shao bing, a roasted, semi-flaky bread pocket, and eaten as a snack or as part of a meal. Hejian style typically serves the meat cold in a warm huoshao while Baoding style serves the meat hot, they both often include green chili-pepper and cilantro leaves. Donkey burger is a popular street food and can also be found on the menus of high-end restaurants. A well-known saying, especially in Baoding (and elsewhere in Hebei province), is "In Heaven there is dragon meat, on Earth there is donkey meat" (天上龙肉，地上驴肉). Donkey burgers have two styles: Baoding style and Hejian style. Baoding style uses round huoshao, while Hejian style uses rectangular huoshao. Also, the inside donkey burgers are different: Baoding style serves hot meat, while Hejian style serves cold meat.

Source: Wikipedia