Burgers now make up just more than 45% of all sandwiches sold in France, according to research from the French consulting firm Gira Conseil cited by the Telegraph.
The research cites 2013 burger sales, which rose from a mere one in nine in 2000.
Moreover, three-quarters of traditional French restaurants now list "le burger" on their menus; in many cases burgers outsell more traditional meals such as steak frites.
Consumption of the baguette itself, dispensed from countless corner boulangeries, also appears to be declining.
It's the portable variety filled with jambon, fromage and other items, however, that's really beleaguered, figures show.
On top of that, France is McDonald's second largest market, after the United States.
In 2012, French fast food sales accounted for 54% of the restaurant