Is It Safe To Refreeze Defrosted Ice Cream. Food may be safely refrozen if it still contains ice crystals or is at 40 °f or below. There is a high risk of bacterial growth and foodborne illnesses such as listeria.

Still, it’s less likely that your ice cream has grown bacteria if the place it sat was colder. That said, you don’t always have time to cook it, so if you’re in a hurry and debating whether or not to throw it back in the freezer, keep in mind these five things that should never, ever be refrozen! Listeria outbreaks can occur in freezers when ice cream that melted is refrozen.