How Do You Store An Onion After You Cut It?
After cutting an onion, store it in an airtight container or wrap it tightly in plastic wrap or aluminum foil. This helps prevent the onion from drying out and also stops the strong odor from spreading to other foods. You can also store the onion in a zip-lock plastic bag and refrigerate it for a longer duration. However, it is advisable to use a cut onion within 2-3 days for best quality and flavor.