1, when steaming, the temperature is low, or the air pressure is too low, or the steaming time is short and unfamiliar, which may stick to the teeth.
2. Too many times of dough pressing will seriously damage the gluten in the dough, resulting in the steamed bread being chewy and sticky.
3, excessive proofing, this problem is similar to too many times of dough pressing, all due to the destruction of gluten, resulting in sticky taste of the finished product.