Hujiao bing

Hújiāo bǐng or pepper bun is a type of baked bun that originated in city of Fuzhou, the capital of China's Fujian province. It is a street food that has become popular in Taiwan and can be found in night markets or mini food stalls throughout Taiwan. The common ingredients are flour, water, and a leavening agent for the outer dough shell, and a meat protein (usually pork or beef) marinated with sugar, soy sauce, white pepper or black pepper, and scallion for the inside filling. It is not known who invented the hújiāobǐng. The dish can be found in Fujian and in Taiwan. Taiwanese vendors list the item as "Fuzhou Pepper Bun" (福州胡椒餅) and credit the creation of the bun to Fuzhounese immigrants. Many of the oldest pepper bun vendors were established by those of Fuzhounese ancestry. The outer dough shell is prepared with flour, water, and a leavening agent such as yeast or baking powder. Lard, butter or oil is sometime added to the dough to make the bun extra crunchy and flaky like a croissant when cooked. The outer shell dough is then individually rolled to a thin circular shape, similar to a dumpling wrapping.

Source: Wikipedia