Place cut onions in an airtight container
Refrigerate immediately
Use within 7 to 10 days for best quality
Keep them away from strong-smelling foods if possible
Store in a separate sealed bag or container to reduce odor transfer
Label the container with the date
Do not leave cut onions at room temperature for long periods
Freeze chopped onions for longer storage
Use freezer-safe bags or containers if freezing
Remove excess air before sealing
Keep cut onions away from moisture to help slow spoilage