When steaming steamed bread, it is good to look inside through the lid, but once the lid is lifted, the steamed bread is wrinkled. Why and how?

I feel dizzy. After steaming, put it in the pot for ten minutes. Then I took it out, covered it with a clean cloth and let it cool. Then I can freeze it in the refrigerator. I can take it out and steam it if necessary.

Do you mean to boil as soon as it is steamed?

Let's just say that raw steamed buns as big as two fists need to be steamed for 20-40 minutes, depending on the number of steamed buns. After steaming, it needs to be held for another 10- 15 minutes.