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.
A: When handled properly, cut onions are not poisonous. After being cut, onions can be stored in the refrigerator in a sealed container for up to 7 days. A widely circulated claim states uncooked, leftover onions are 'poisonous' because they're 'a huge magnet for bacteria,' thus likely to spoilage.