Not every leftover is as safe as it looks the next morning. While refrigeration slows bacterial growth, it does not stop it entirely — and some cooked foods deteriorate faster than most people expect. Here are the five foods that deserve extra caution when stored overnight.
In brief
- —Cooked rice can harbour toxins that reheating won’t destroy
- —Seafood spoils faster than most foods, even refrigerated
- —Refrigerate all cooked food within two hours of cooking
Why your fridge does not make leftovers automatically safe
Refrigeration is a powerful tool against bacterial growth, but it is not a guarantee of safety. Some microorganisms continue to multiply at cold temperatures, and food left at room temperature for too long before being refrigerated is particularly vulnerable to contamination.

Food safety experts generally recommend placing cooked food in the refrigerator within two hours of cooking. Most leftovers should then be consumed within 24 to 48 hours, depending on the type of food. Any leftover that develops an unusual smell, texture, or appearance should be discarded immediately.
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