The NSW Food Authority has announced a year-long voluntary trial of the Scores on Doors program will be rolled out across the Australian state of NewSouth Wales.

"Scores on Doors offers businesses a fantastic opportunity to show customers just how seriously they take food hygiene and the results they have achieved," said Katrina Hodgkinson, Minister for Primary Industries.

"Certificates from the voluntary program will be displayed near doorways of participating retail food outlets so customers will be able to see just how well restaurants, cafés or other outlets have performed during their food safety inspection."

Under the Scores on Doors trial program, participating retail food outlets are assigned a star rating dependent upon their level of performance. Top rating businesses receive a five star rating, with four and three stars also awarded to businesses that perform well and comply with the requirements of the Food Standards Code.

Participation is voluntary though through the program businesses will have the opportunity to promote and advertise their food safety performance.