Restaurant ratings identify restaurants according to their quality, using notations such as stars or other symbols, or numbers. Stars are a familiar and popular symbol, with scales of one to three or five stars commonly used. Ratings appear in guide books as well as in the media, typically in newspapers, lifestyle magazines and webzines. Websites featuring consumer-written reviews and ratings are increasingly popular, but are far less reliable.
In addition, there are ratings given by public health agencies rating the level of sanitation practiced by an establishment.
One of the most well known guides is the Michelin series which award one to three stars to restaurants they perceive to be of high culinary merit. One star indicates a "very good restaurant"; two stars indicate a place "worth a detour"; three stars means "exceptional cuisine, worth a special journey".
Several bigger newspapers employ restaurant critics and publish online dining guides for the cities they serve, such as the Irish Independent for Irish restaurants.
Internet restaurant review sites have empowered regular people to generate non-expert reviews. This has sparked criticism from restaurant establishments about the non-editorial, non-professional critiques. Those reviews can be falsified or faked.
The different guides have their own criteria. Not every guide looks behind the scenes or decorum. Others look particularly sharply to value for money. This is why a restaurant can be missing in one guide, while mentioned in another. Because the guides work independently, it is possible to have simultaneous multiple recognitions.
A top restaurant rating can mean success or failure for a restaurant, particularly when bestowed by influential sources like Michelin. Still, a good rating is not enough for economic success and many Michelin starred and/or highly rated restaurants have met the same fate as the Dutch restaurant De Swaen.