School canteens (including kindergarten canteens), construction site canteens with more than 100 people, collective dining distribution units, central kitchens, catering services for major events and one-time meals with more than 100 people, and samples of finished food shall be kept for each meal.

Food samples should be stored in sealed special containers after cleaning and disinfection according to varieties, and placed in special refrigeration facilities, and kept under refrigeration conditions for more than 48 hours. The sample retention amount of each variety shall meet the inspection requirements, not less than 100g, and the name, sample retention amount, sample retention time, sample retention personnel and auditors shall be recorded.

The main person in charge of a food production and marketing enterprise shall implement the enterprise food safety management system and be fully responsible for the food safety work of the enterprise.

Extended data:

A food trading enterprise shall have a management system to ensure food safety. Food safety management system should include employee health management system, training management system and food safety administrator system.

Food safety self-inspection and reporting system, food business process and control system, cleaning, disinfection and maintenance system of places, facilities and equipment, incoming inspection and inspection record system, food storage management system, waste disposal system, food safety emergency plan, etc.

"Among them, the Food Management Process and Control System includes the Food Sample Retention System, and catering enterprises must establish and improve the food sample retention system, and strictly implement and implement it according to law.

Baidu encyclopedia-how to investigate and deal with food samples left by catering enterprises