When should leftovers be discarded to ensure food safety?

Leftovers should be discarded after 3 to 4 days in the refrigerator to ensure food safety. This timeframe helps prevent the growth of harmful bacteria that can cause foodborne illnesses. Leftovers may be safe to eat within this period if they have been stored properly at or below 40°F (4°C) and are reheated thoroughly before consumption.

Storing leftovers beyond this timeframe increases the risk that bacteria such as Listeria or Salmonella could proliferate to dangerous levels, even if the food looks and smells fine. Therefore, adhering to the 3 to 4-day guideline is crucial in maintaining safe food practices and protecting health.