According to the Code of Practice for Food Safety in Catering Services:

Article 36? Food sample retention requirements?

Number one? 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. ?

The second one? 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.

Extended data

"Food safety operation standard for catering services" stipulates that:

Article 38 Inspection requirements

Number one? Collective dining distribution units and central kitchens shall be equipped with inspection rooms suitable for the variety and scale of production, inspection equipment and facilities suitable for product inspection items, special sample storage containers and cold storage facilities.

The second one? The inspection room should be equipped with qualified inspectors who have received professional training.

Number three? Encourage large and above restaurants (including large restaurants) and school canteens to be equipped with corresponding inspection equipment and personnel.

Notice of the Ministry of Education-General Office of the Ministry of Education on Forwarding the State Food and Drug Administration of the United States on Printing and Distributing the Code of Practice for Food Safety in Catering Services