Food Safety, Sanitation, and HACCP
Core Concepts
Candidates must know the temperature danger zone (41°F–135°F / 5°C–57°C), time-temperature control, and the seven HACCP principles: hazard analysis, critical control points, critical limits, monitoring, corrective actions, verification, and recordkeeping. Understand biological, chemical, and physical hazards; the big six pathogens and their controls; cross-contamination prevention; proper cooling (135°F to 70°F within two hours, then to 41°F within four more); reheating to 165°F; and holding/receiving temperatures. Know handwashing, sanitizer concentration, and cleaning versus sanitizing.
Traps in Questions
Questions often test critical limit versus corrective action: a limit is a measurable threshold; a corrective action is what you do when it is exceeded. Distractors may confuse sanitizing with sterilizing, or cite the wrong cooling interval. Watch for the trap of using time as a substitute for temperature without a documented policy. Receiving-temperature questions often hinge on rejecting product rather than salvaging it.
Rule of Thumb
Two-stage cooling: 135°F→70°F in ≤2 hours, then 70°F→41°F in ≤4 hours (six hours total). Reheat to 165°F within two hours. When in doubt, discard.
Worked Example
A stock cools from 135°F to 90°F in two hours. It failed the first-stage limit (should reach 70°F within two hours). The corrective action is to reheat to 165°F and restart cooling, or discard if quality/safety cannot be assured, and to record the deviation.