(Find outHow to Freeze More Fruits and Vegetableshere.)
If you want to be extra cautious, double-bag them.
And don’t forget to label and date the bag.
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That way, you only defrost what you need right away.
This is especially handy for caramelized onions, which are particularly time-consuming but add tons of flavor to food.
Use the plastic wrap to pop out the onions, then transfer to a freezer bag for longer-term storage.