Which of the following is not a safe way to cool hot food?

Letting hot food cool at room temperature is not a safe way to cool it because this method allows the food to remain in the temperature danger zone (41°F to 135°F) for too long. When food is in this temperature range, it poses a significant risk for bacterial growth, which can lead to foodborne illnesses.

Instead, safe cooling methods, such as placing food in the refrigerator, cooking it in smaller portions, or using an ice bath, effectively reduce the temperature of the food quickly and minimize the time it spends in the danger zone. These techniques help ensure that food is cooled safely and can be stored without posing health risks to consumers.