Although baguette consumption has declined over the last century, France still makes around 16 million of the loaves per day - that's 6 billion baguettes a year - according to a 2019 Fiducial estimate.
Made only with flour, water, salt and yeast, baguette dough must rest 15 to 20 hours at a temperature between 4 and 6 degrees Celcius (39 to 43 degrees Fahrenheit), according to the French Bakers Confederation, which fights to protect its market from industrial bakeries.