Le Gavroche, the Roux family flagship and foundation stone of modern London gastronomy, is celebrating its 50th anniversary this year with a “Back to the Classics” menu of original dishes from 1967.

The menu is available until December and costs £90 a head for five courses, bookable in advance, to be shared in the Library by groups of four to six. Dishes will change with the seasons, and a bottle of 1967 vintage wine can be added for £90.

Founded by Albert Roux near Sloane Square in Chelsea, Le Gavroche moved to its current address in Upper Brook Street, Mayfair, in 1981. Chef-patron Michel Jr took the kitchen over from his father in 1991.

The restaurant has led the fine-dining scene throughout that half-century, training generations of young chefs who raised standards throughout the country, and picking up accolades and recognition along the way. It induced the French tyre manufacturer to recognise that decent food was not an impossibility in Britain when it won the UK’s first Michelin star in 1974, followed by three stars seven years later.

According to the latest Harden’s Survey, Le Gavroche remains “the absolute pinnacle of fine dining” to its legions of fans.