Don't toss that leftover half—store it properly to use later. It's common to only need a portion of an onion for a recipe. You might have even grabbed a large onion at the store when you only needed a ...

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 ...