cook-chill is a catering system based on the full cooking of food followed by fast chilling and storage in controlled low temperture conditions just above the freezing point with subsequent thorough re-heating close to the consumer before cosumption.In order preserve the appearance,texture,flavour,nutritional quality,and safety of the cooked food,blast chilling should commence as soon as possibel after completion of cooking9and portioniong if it is done after cooking)and in any event within 30 minutes of lraving the cooker.In order to achieve the recommended chilling process,the chiller uesd should have a performance specification showing its capablev of redcing the temperature of a 50-mm layer of food from