What is the recommended maximum time for leaving perishable food at room temperature?

The recommended maximum time for leaving perishable food at room temperature is 2 hours. This guideline is based on food safety standards aimed at preventing the growth of harmful bacteria that can lead to foodborne illnesses. Perishable foods, such as meat, dairy, and cooked vegetables, provide an ideal environment for bacteria to multiply when they are not kept at safe temperatures.

After 2 hours, the risk of bacterial growth significantly increases, especially if the ambient temperature is above 90°F (32°C), where the time limit reduces to just 1 hour. To maintain food safety, it's essential to refrigerate or freeze perishable items promptly after serving or preparing to ensure they remain safe for consumption.