Rating Systems

Michelin Guide
The Michelin Star Guide reviews and rates the top restaurants and chefs from all over the world annually. The guide awards one to three stars to a number of restaurants of outstanding quality.
One star indicates a "very good cuisine in its category".
Two stars indicates "excellent cuisine, worth a detour".
Three stars indicate "exceptional cuisine, worth a special journey".
Another rating used in the Michelin Guide is Rising Stars, which indicates that a restaurant has the potential to qualify for a star.

AA Rosette Guide 
One rosette: Chefs should display a mastery of basic techniques and be able to produce dishes of sound quality and clarity of flavours, using good, fresh ingredients. 
 
Two rosette: Innovation, greater technical skill and more consistency and judgement in combining and balancing ingredients are all needed at this level. 

Three rosette:  This award takes a restaurant into the big league. Expectations of the kitchen are high: exact technique, flair and imagination must come through in every dish, and balance and depth of flavour are all-important. 

Four rosette: At this level, not only should all technical skills be exemplary, but there should also be daring ideas, and they must work. There is no room for disappointment. Flavours should be accurate and vibrant. 

Five rosette: The supreme accolade awarded only when the cooking is at the pinnacle of achievement. Flavours, combinations and textures show a faultless sense of balance, giving each dish an extra dimension.

S. Pellegrino World's 100 Best Restaurants 
The list is the result of a poll of 837 experts, each who cast 7 votes for their favourite restaurants that they have dined in during the last 18 months. The results and the awards are staged and published by Restaurant Magazine in the UK. S.Pellegrino are the title sponsor, but do not have any involvement with the results or awards and their compilation.