Level 2 Food Hygiene Certificate Temperature Control 2 — Questions and Answers
Question 1: What is the '2-hour/4-hour rule' in relation to food temperature control?
- Food must be cooked for at least 2 hours and rested for 4 hours
- Food left in the danger zone for up to 2 hours can be refrigerated; between 2-4 hours it must be used immediately; beyond 4 hours it must be thrown away (Correct answer)
- Food deliveries must arrive within 2 hours and be stored within 4 hours
- Fridges should be checked every 2 hours and freezers every 4 hours
Correct answer: Food left in the danger zone for up to 2 hours can be refrigerated; between 2-4 hours it must be used immediately; beyond 4 hours it must be thrown away
The 2-hour/4-hour rule provides guidance on food that has been in the temperature danger zone: under 2 hours — refrigerate and use later; between 2 and 4 hours — use immediately; over 4 hours — discard. Total time in the danger zone is cumulative.
Question 2: Why is it important to calibrate probe thermometers regularly?
- To make them look professional
- To ensure they give accurate readings, as inaccurate thermometers could lead to unsafe food being served (Correct answer)
- Because it is the law to calibrate them every day
- To make them last longer
Correct answer: To ensure they give accurate readings, as inaccurate thermometers could lead to unsafe food being served
Probe thermometers must be calibrated regularly (using ice water at 0°C and/or boiling water at 100°C) to ensure accuracy. An inaccurate thermometer could indicate food is safely cooked when it is not, potentially leading to foodborne illness.
Question 3: How should cooked food be cooled safely before refrigeration?
- Place hot food directly into the fridge immediately
- Cool food as quickly as possible to below 8°C within 90 minutes, using methods such as dividing into smaller portions, using blast chillers, or ice baths (Correct answer)
- Leave food on the counter overnight to cool to room temperature
- Place food outside in cold weather
Correct answer: Cool food as quickly as possible to below 8°C within 90 minutes, using methods such as dividing into smaller portions, using blast chillers, or ice baths
Food should be cooled as quickly as possible to reduce the time spent in the danger zone. The FSA recommends cooling food to below 8°C within 90 minutes. Methods include using shallow containers, blast chillers, ice baths, or stirring regularly. Placing very hot food directly into a fridge can raise the fridge temperature and affect other stored food.
Question 4: At what temperature should frozen food be stored?
- 0°C
- -5°C
- -18°C or below (Correct answer)
- -10°C
Correct answer: -18°C or below
Frozen food should be stored at -18°C or below. At this temperature, bacterial growth is effectively stopped (though bacteria are not killed). Most commercial freezers operate at -18°C to -22°C. This is a legal requirement under UK food hygiene regulations.
Question 5: What should you do if a food delivery arrives at a temperature of 12°C when it should be chilled?
- Accept it and put it straight into the fridge to cool down
- Reject the delivery as it is outside the acceptable temperature range and may be unsafe (Correct answer)
- Accept it but use it first before other stock
- Accept it and cook it immediately
Correct answer: Reject the delivery as it is outside the acceptable temperature range and may be unsafe
Chilled food deliveries should arrive at 5°C or below (8°C maximum). At 12°C, the food has been in the danger zone and bacterial growth may have occurred. The delivery should be rejected and the supplier notified. Accepting and refrigerating it does not reverse any bacterial growth that has already taken place.
Question 6: What is the correct procedure for defrosting frozen food safely?
- Leave it on the kitchen worktop at room temperature
- Defrost in the fridge on the bottom shelf, in a container to catch drips, allowing sufficient time (Correct answer)
- Run it under hot water to speed up defrosting
- Defrost it in direct sunlight on a windowsill
Correct answer: Defrost in the fridge on the bottom shelf, in a container to catch drips, allowing sufficient time
The safest method is to defrost food in the fridge, ideally on the bottom shelf to prevent drips contaminating food below. It should be placed in a container to catch any liquid. This keeps the food at a safe temperature throughout defrosting. Adequate time must be allowed — large items may take 24-48 hours.
Level 2 Food Hygiene Certificate Temperature Control 2
What is the '2-hour/4-hour rule' in relation to food temperature control?