Cal. HSC § 113739.1

(a) “Catering operation” means a food service that is conducted by a permanent food facility approved for food preparation where food is served, or limited food preparation is conducted, at a location other than its permitted location, in either of the following circumstances: (1) As part of a contracted offsite food service event. (2) When operating in conjunction with a host facility with direct food sales. (b) “Catering operation” shall not include either of the following: (1) Food ordered as takeout or delivery from a food facility, where the food is provided to the consumer for self-service. (2) A food facility that is participating as part of a community event.