1. If steamed steamed buns of normal size take 15 minutes, it is generally recommended to steam them with high fire first, and then steam them with medium fire after the water in the steamer is boiled, and it is not advisable to steam them with low fire.

2. At first, steamed buns were steamed with strong fire, so that a large amount of water vapor was kept in the pot. After the water was boiled, it was changed to medium fire, so that steamed buns could quickly expand and set, and the taste was soft and sweet. The reason why it is not suitable for steaming with small fire is that small fire is not suitable for steaming pasta, which easily leads to the collapse of steamed bread skin and the taste is not soft. In addition, if it is a stuffed bun or a bigger one, steaming 15 minutes may not be enough, and it needs to be steamed for another 5 minutes.