Foodservice Systems: Production Models, Safety, and Cost Control
Production systems and their trade-offs
Conventional (cook-serve) production cooks and serves on site - highest labor skill, best quality, shortest holding. Ready-prepared systems (cook-chill, cook-freeze, sous vide) separate production from service, extend holding time, and depend on strict chilling and regeneration controls. Commissary systems produce centrally and distribute to satellite units. Assembly-serve purchases pre-prepared items: least equipment and skill, longest storage, highest food cost. Questions ask which system fits a constraint such as space, labor, quality, or budget - answer from the trade-offs, not from preference.
Food safety core
HACCP has seven principles: conduct hazard analysis, determine critical control points, set critical limits, monitor, establish corrective actions, verify, and keep records. The temperature danger zone is 41–135°F (5–57°C). Cooling standard: 135°F to 70°F within 2 hours, then 70°F to 41°F within 4 more hours. Reheat to 165°F within 2 hours. FIFO rotation, calibrated thermometers, and documented receiving temperatures are frequent test items.
Purchasing and equipment
Specifications define quality, grade, packaging, and yield. Distinguish as-purchased from edible-portion weight, and match equipment to task (moist versus dry heat, convection, combi ovens, blast chillers for rapid cooling).
Traps
Treating the cooling standard as one step rather than two stages. Naming a monitoring activity as a corrective action. Confusing a critical limit with a critical control point.
Worked example
Fifty pounds as-purchased at 80% yield gives 50 × 0.80 = 40 lb edible portion. If you need 40 lb EP, buy 40 ÷ 0.80 = 50 lb AP.