Food Safety and Hygiene Fundamentals
What this domain covers
This domain tests the vocabulary and core controls that everything else in the syllabus builds on: the difference between food safety and food hygiene, how hazards are classified, the temperature danger zone, and the basics of cleaning, sanitising and pest control.
Core rules
- Food safety means food will not cause harm when eaten correctly; food hygiene is the set of practices that achieve it.
- Hazards are biological (bacteria, viruses, moulds, parasites), chemical (cleaning chemicals, pesticides, allergens) or physical (glass, metal, stones, hair).
- The temperature danger zone is 5 °C to 63 °C; bacteria multiply fastest around 25–40 °C. Keep chilled food at or below 5 °C and hot food at or above 63 °C.
- The WHO five keys: keep clean; separate raw and cooked food; cook thoroughly; keep food at safe temperatures; use safe water and raw materials.
- Cleaning removes visible dirt and grease; sanitising reduces microorganisms to a safe level. Food-contact surfaces need both.
- Freezing stops bacteria growing but does not kill them.
- Pests are controlled by proofing, waste management and regular inspection, not by spraying insecticide near food.
Worked example
A caterer cooks rice at 11:00 and holds it in a covered pot at room temperature until 16:00. Is it safe? Reasoning: cooked rice is a high-risk food, and at 25–35 °C it sits squarely in the danger zone for five hours, long enough for Bacillus cereus to multiply and form toxin. Covering the pot neither cools nor heats it. The correct control is to hold it above 63 °C, or cool it rapidly and reheat to 75 °C once before service.
Traps that cost marks
- Confusing cleaning with sanitising.
- Believing freezing “kills” bacteria.
- Judging safety by smell or appearance only.
- Misremembering the danger-zone limits (5–63 °C, not 0–100 °C).