Not the best idea to leave bao buns out overnight! They’re best enjoyed fresh or stored in the fridge. If they’ve been out for too long, they might lose their fluffiness or get a bit funky. Keep them sealed and chilled for the best taste!
I wouldn't recommend leaving bao buns out overnight at room temperature since bacteria might grow on them. I suggest you store them in an airtight container and refrigerate them. They can be kept in the fridge for 3-4 days.
They’re best enjoyed fresh or stored in the fridge. 
If they’ve been out for too long, they might lose their fluffiness or get a bit funky. 
Keep them sealed and chilled for the best taste!
I suggest you store them in an airtight container and refrigerate them. 
