Where To Store Cut Onions Once you’ve cut an onion, any remaining pieces should be kept in the fridge. You’ll have about a week to use the onion before it starts to lose its freshness.

Food storage advice can be a complete game-changer not just for bananas and potatoes, but also for maintaining your onions' freshness for longer periods. Onions, a kitchen essential across UK ...

These containers are the best way to store cut onions and keep them from stinking up the refrigerator. Shop these onion storage containers at Amazon, starting at $8.