How long is cut onion good for?
Cut or chopped onions stored in a proper sealed container may be kept in your refrigerator at 40 degrees or below for seven to ten days.
According to the National Onion Association, a cut onion can be kept in the fridge for up to 10 days in an air-tight container.
Use it or loss it. Onions aren’t suppose to be kept longer then a few hours as they breed bacteria
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