The steamed sticky bean bag collapsed because the flour dough was not made well when making sticky bean bag, and there was not enough baking powder in the flour dough.

Sticky bean bag, also known as soybean bag or bean bag. It is a kind of bean paste bag food originated from Manchu. Manchu people traditionally like sticky food, which is conducive to long-term outdoor activities in cold weather, such as hunting and chopping wood.