What's the maximum time food can be above 8°C before we have to throw it away?

Date modified: 22nd September 2025 | This FAQ page has been written by Pilla Founder, Liam Jones, click to email Liam directly, he reads every email. Or book a demo to see how hospitality businesses use Pilla to manage food safety.

Food that has been above 8°C must be thrown away after 4 hours. This is known as the 4-hour rule. It's important to note that this is only allowed once - you can't have multiple periods where food is above 8°C, even if each period is less than 4 hours.

Common mistake: If food is only slightly above 8°C, it's safe to extend the 4-hour rule.

This is incorrect. The 4-hour rule is based on the growth rate of bacteria at temperatures above 8°C. Even a slight increase can significantly enhance bacterial growth, making the food unsafe to consume after this period.

Common mistake: You can reset the 4-hour rule by cooling the food back below 8°C and then reheating it.

Once the food has been above 8°C for a total of 4 hours, it must be discarded. Cooling and reheating do not reset the clock, as bacteria may have already reached unsafe levels, posing a health risk.

Does this apply to all types of food?

No, fresh fish has stricter requirements - it must be stored below 3°C at all times. If fresh fish goes above 3°C, it needs to be discarded immediately. For all other high-risk foods like cooked meats, dairy products, and prepared salads, the 4-hour rule applies.

Common mistake: Fresh fish can be safely stored above 3°C.

Fresh fish is highly perishable and must be stored below 3°C at all times to prevent rapid bacterial growth. Even short periods above this temperature can render fish unsafe, regardless of how quickly it is consumed.

What should we do if we find food between 6-8°C?

If food temperature is between 6-8°C, you don't need to discard it immediately, but you should monitor it closely. Take the food temperature every hour to make sure it doesn't exceed 8°C. If the fridge is not working properly, try to transfer the food to another fridge that's maintaining the ideal temperature of below 5°C.

UK Official Guidance

USA Official Guidance

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How often do I need to check fridge temperatures?

Fridge temperatures should be checked and recorded twice per day or once per shift. Regular checking helps identify any issues early, preventing potential food safety problems.

What should I do if I find the fridge temperature is over 8°C?

If you discover that the fridge temperature is above 8°C, you should immediately take the following steps: (1) Check the actual food temperature using a clean, sanitised probe thermometer.

Where exactly should raw meat be stored in the fridge

Raw meat should always be stored on the lowest shelf of the fridge to prevent drips from contaminating other foods.

Do I need to record fridge temperatures even if they're normal?

Yes, it is necessary to record all fridge temperatures, even when they are within the normal range.

Can I use cling film to cover food in the display fridge?

Yes, you can use cling film to cover food in the display fridge as long as it is food-grade wrapping. Ensure that your display fridge also has proper sneeze guards or screening to protect the food.

How long can we keep batch-cooked food in the fridge?

Batch-cooked food should be consumed within three days, including the day it was prepared. For instance, if the food is cooked on Tuesday, it should be used by the end of Thursday.

Should I store fresh fish in a separate fridge from other items?

Ideally, fresh fish should be stored in a separate fridge set at a temperature below 3°C to meet its specific cooling requirements.

How often should we clean the fridge seals?

Fridge seals should be inspected weekly to check their condition and cleanliness. This regular maintenance helps keep the fridge working efficiently.

If the fridge breaks down overnight, do we have to throw everything away?

If the duration of the fridge outage overnight is unknown and you cannot verify that the food temperature has remained below 8°C using a probe thermometer, it is safer to discard all the food and record it as waste. However, if the temperature checks confirm the food is below 8°C, you can safely transfer it to another working fridge. This approach prevents unnecessary waste while ensuring compliance with food safety standards.

If food in the fridge is at 7°C, how often should we check it?

When food is stored in a fridge and the temperature is between 6-8°C, it should be checked hourly to ensure it doesn't exceed 8°C.

Can we put hot food straight into the fridge?

No, you should not put hot food directly into the fridge. Doing so can raise the temperature inside the fridge, potentially affecting other stored foods and causing temperature fluctuations.

How much space should I leave between items in the fridge for good air circulation?

Ensure there is adequate space around all sides of items in your fridge, particularly at the back and sides of the unit, to allow cold air to flow freely.

What happens if we don't have another fridge to move food to during a breakdown?

If you don't have access to an alternative refrigeration unit during a breakdown, you must use the affected food within 4 hours if the temperature rises above 8°C.

What should I do if I notice the fridge seal is damaged?

If the fridge seal is damaged, it's important to address the issue immediately as it can lead to warm air entering the fridge and cause temperature fluctuations.