When does Marsh mellow fluff have to be refrigerated?

Answer 1

Marshmallow fluff does not need to be refrigerated and can be stored at room temperature in a cool, dry place. However, if the container has been opened and you want to extend its shelf life, you can refrigerate it to prevent it from becoming too sticky. Just ensure it is tightly sealed to avoid absorbing moisture or odors. If refrigerated, it may become harder and require a brief period at room temperature to soften before use.