One of the best known guides is the Michelin series which award one to three stars to restaurants they perceive to be of high culinary merit.
Most news reports attributed his suicide to the downgrade carried out by the rival Gault Millau guide.
In the United States, several states have imposed uniform statewide restaurant grading systems, under which safety and hygiene inspection reports are used to compute numerical scores or letter grades, and those must be prominently posted by restaurants.
[9] In many other states, the mandatory posting of restaurant grades is neither required nor prohibited statewide, which means it is purely a matter for local governments like cities and counties.
[9] In November 1997, a KCBS-TV sweeps news story called Behind The Kitchen Door focused attention on problems in Los Angeles's top restaurants.
[9] Environmental health specialists were required to use a standard form called the Food Official Inspection Report to identify violations as they inspected establishments; the form required them to subtract a certain number of points for each violation found.
[9] Based on the number of points remaining, letter grades were then assigned and required to be prominently posted at all establishments selling food, and all establishments were also required to provide a copy of the underlying inspection report to any customer on request.
[15] Although Los Angeles County was not the first local jurisdiction to require restaurants to post grades, its success in implementing such a program inspired many other local governments during the 2000s to enact similar programs based on the Los Angeles model, such as Toronto, Las Vegas, Dallas, and New York City.