Temperature Control and Safe Food Handling
Temperature control is the single most tested area. Learn the danger zone: 5 °C to 60 °C - bacteria multiply fastest here. Keep cold food at or below 5 °C and hot food at or above 60 °C. Know the 2-hour/4-hour rule: ready-to-eat food held in the danger zone for less than 2 hours can be refrigerated or used; 2–4 hours can be used but not returned to refrigeration; over 4 hours must be discarded. Cooking must reach 75 °C in the centre (or equivalent time-temperature combination) to kill vegetative pathogens.
Understand the cooling rule: cooked food should be cooled from 60 °C to 5 °C within a set time (commonly within 2 hours to 21 °C, then to 5 °C within a further 4 hours, or as your programme specifies). Reheating must reach 75 °C rapidly and only once. Frozen food must be thawed safely - in the fridge, in a microwave (then cooked immediately), or under cold running water - never on the bench.
Know how to use a probe thermometer: sanitise the probe, take the temperature in the thickest part, and clean again after use. Check fridge/freezer temperatures and record them.
Traps: candidates confuse storage temperatures with cooking temperatures, or forget that the 2-hour/4-hour rule applies only to ready-to-eat food. Watch for 'reheat to 60 °C' - that is holding temperature, not reheating.
Worked example: A caterer leaves coleslaw out at 22 °C for 3 hours. That is in the 2–4 hour band, so it can be served now but must not be refrigerated for later - discard any leftovers.