It took an out-of-this-world arrival to get that perfect chemical combination for water to fill our planet. Water may have come to earth by way of comets and asteroids. Morning dew and roaring falls inspire poets. Hurricanes and typhoons wreak devastation.
It's also necessary to store and handle the cut onions properly to further reduce the risk of bacterial contamination. Cutting Onions Ahead of Time Cutting onions the day before you need them is safe when you take the proper precautions.
Cut onions will be OK for a couple days in the fridge. If you are going to use it in cooking, chop the remainder of the onion when you first cut it up. Put it into a containerâ¦ and freeze. Then, you can take out what you need as you need it.   Another answer If kept in an airtight container 7 days.