[header] How to store a cut onion [title] Keep your onion clean when preparing it for storage. [step] Minimize exposure to harmful bacterial by preventing cross-contamination with uncooked meat and dairy products. Use separate cutting boards for meat and produce. 
Always wash your hands after handling uncooked meat and ensure that your knife is clean. [substeps] If you have space, consider setting up dedicated areas for produce and meat preparation, so you don't spread germs while cooking.