Time/temperature control — Food Safety Glossary

Managing both how hot or cold food is and how long it spends in the danger zone to keep potentially hazardous food safe.

Frequently asked questions

What is time/temperature control?

It is managing both how hot or cold food is and how long it spends in the danger zone, so potentially hazardous food stays safe.

Why does time matter as well as temperature?

Bacteria grow in the danger zone over time, so both the temperature of the food and how long it stays in the zone determine whether it becomes unsafe.

What are the key temperatures to remember?

Cold food at or below 5 degrees C, hot food at or above 60 degrees C, and the danger zone in between from 5 degrees C to 60 degrees C.

How does time control work when temperature control is not possible?

For ready-to-eat potentially hazardous food in the danger zone, the 2-hour / 4-hour rule sets how long it can be used, refrigerated or must be discarded.

How do I show my time/temperature controls are working?

Keep monitoring records of temperatures and times at key steps as part of your food safety program, using a calibrated probe thermometer.

Temperature danger zone 2-hour / 4-hour rule Potentially hazardous food (PHF) Cooling (of cooked food) Food Safety Program Food safety glossary Food safety guides
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