The temperature danger zone has its name for a reason. A single bacterium doubles every 20 minutes in the right conditions, meaning it can multiply trillions of times in just 24 hours without proper attention to food safety. The temperature danger zone is between 41℉ and 135℉—a temperature range in which pathogens grow well. Harmful microorganisms can grow to levels high enough to cause illness within four hours.
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| Time Control Diagram for Cold and Hot Food. |
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