Keep whole, unpeeled onions in a cool, dry, dark, well-ventilated place
Store them away from direct sunlight and moisture
Use a mesh bag, basket, or open container for airflow
Keep onions separate from potatoes
Do not refrigerate whole onions unless they are peeled or cut
Store peeled onions in an airtight container in the refrigerator
Store cut onions in an airtight container in the refrigerator
Use refrigerated cut onions within a few days
Check stored onions regularly and remove any that are soft, moldy, or sprouting
Freeze chopped onions for longer storage if needed