The same goes for shallots. Store whole onions in a cool, dry, dark place to prevent sprouting or spoilage. Avoid plastic bags for whole onions to reduce trapped moisture and mold risk. Refrigerate ...

The best way to store whole onions is in a cool, dark, dry place, where they can last up to two months. Peeled, chopped, and cooked onions can last up to a week when stored in the fridge. Never store ...