@journal {FS_5_2023, title = "food service 5/2023", journal = "Foodservice", ISSN = "0936-1618", year = "2023", number = "5", doi = "FS_5_2023", url = "https://content-select.com/index.php?id=bib_view&doi=FS_5_2023", publisher = "Deutscher Fachverlag", language = "", }