Does mixed green salad go bad if left your overnight?

Yes, a mixed green salad will likely go bad if left overnight. Here's why:

* Moisture and Bacteria: The moisture from the dressing creates a perfect environment for bacteria to grow. This is especially true if the greens are chopped and have exposed surfaces.

* Wilt and Oxidation: The greens will begin to wilt and oxidize, causing them to lose their crispness and develop an unpleasant taste.

* Loss of Nutrients: Nutrients in the greens will start to degrade over time.

Tips to prolong freshness:

* Store separately: Store the greens and dressing separately to prevent wilting and bacterial growth.

* Use airtight containers: Store greens in airtight containers to minimize exposure to air and moisture.

* Paper towels: Line the container with paper towels to absorb excess moisture.

* Refrigerate immediately: Put the salad in the refrigerator as soon as possible after preparing it.

While you might be able to eat a salad left overnight, it's best to avoid it for safety and quality reasons. If you're unsure, it's always better to err on the side of caution and throw it away.