Because these three methods are the same, they are put together.
The history of steamed bread, steamed buns and flower rolls can be traced back to the Spring and Autumn Period and the Warring States Period. In the Romance of the Three Kingdoms, there is a record that Zhuge Liang offered steamed bread to Lu Shui-shen.
The food made by mixing flour with water and sugar, fermenting and steaming is called steamed bread. When the finished product is hemispherical or long, stuffing such as meat stuffing, vegetable stuffing and bean paste is added to make steamed bread, and salt and pepper, sesame paste and scallion oil are added to knead into folds, which are called flower rolls.