After the 'Christmas log', the French maintain their tradition of celebrating the Epiphany with the 'Galette des Rois' (Pancake of the Kings), a flaky pastry cake that contains a figurine, often said to represent the Christ Child.
More than 30 million cakes will be devoured by children and adults alike in France in January, and millions more in neighbouring Switzerland, Belgium, and Luxembourg, usually washed down with a bottle of fizzy cider.
Even in these play-safe times, when you might think parents would be reluctant to expose their child to a choking risk, the post-Christmas Twelfth Night tradition of sharing a "Galette des Rois" shows no signs of flagging.
The traditional sharing of the cake is an "important event for the profession", according to Parisian pastry chef Fabien Rouillard, although chefs and bakers had to increase their price due to butter prices doubling in two years.
"The price of butter has doubled in two years. The butter, which we put inside here, we buy at €9.50 a kilo. It was about €3.80 in 2018. We have passed on a little of the selling price, we have increased our cake prices by 10%. We're at €6.60 a slice instead of €6," explained Rouillard.
How the tradition works
Whoever finds the token figurine, or the "fève" as it is called in France, is proclaimed the King or Queen of the feast, and crowned with a cardboard diadem that comes with each cake.
The lucky monarch is supposed to be blessed with good luck for the New Year, but a recent survey found most French people cheat to make sure a child gets the honour.
Even some adults don't leave the prize up to chance.
"I will share it with my husband, there will be no discussion about the King and Queen," revealed 76-year-old pensioner Francine Berger-Duquene.
Originally dried beans were placed inside the pastry, explaining why the tiny token is called "fève".
But by the late 19th-century, the beans were replaced by porcelain figurines, some of which have become highly collectible.
To the horror of purists, more and more plastic charms are being used for the celebration, which traditionally marked the Christian feast of the Epiphany on January 6, when the three Magi were supposed to have visited the Christ child.
But in a small village in the Vosges region of Lorraine in eastern France, two middle-aged sisters are doggedly holding out against the tsunami of plastic knick-knacks.
Christel and Muriel Nex are among the very last to make the "fèves" by hand.
'No two are ever exactly the same'
The pair turn out between 40,000 and 50,000 charms a year between them, with Christel revealing that "no two are ever exactly the same".
"We don't have any machines, and we want to keep up the quality, so we can't increase our production any more than that," the 51-year-old added.
Each clay "fève" takes several days to make from the moulding and sculpting to the painting and final firing.
In the past, these tiny treasures were often passed down through families to be baked into the cake each year. These days, however, the galettes are rarely homemade.
In 2005, the sisters took over from their parents supplying bakeries across the country with a range of traditional and child-orientated figurines, many carrying company logos.
They range from little animals to the baby Jesus and a Kama Sutra collection for the more daring.
With collectors always on the lookout for rarities, they introduce new designs every year.
Twelfth Night traditions outside France
The custom of hiding trinkets or coins in Twelfth Night cakes is not confined to France.
Similar traditions exist across Europe from the ringed Spanish "Roscon de Reyes", to the Portuguese "Bolo Rei" and the Provencal "Gâteau des Rois" eaten in the South of France.
These brioche-style cakes decorated with dried fruit were clearly the inspiration for the "King cakes" of the American Deep South and the Latin American "Rosca de Reyes".
Historian Nadine Cretin believes the practice dates back to the Roman mid-winter Saturnalian feasts when a "king was elected by the throwing of dice to preside over domestic banquets".
Parallel customs exist across Eastern Europe and the Balkans with the Greeks ushering in the New Year with the "Vassilopita" (or "King Pie") which often contained a gold sovereign.
However, the tradition can leave a bitter taste in the mouth in Spain, where the feast of the Three Kings is still bigger than Christmas.
If you are unlucky enough to get the "fève" there you are supposed to pay for the cake, while the King or Queen is the person who finds the accompanying trinket.
In Ireland, the Epiphany was known as "Women's Christmas" and is remembered more for its gastronomic horrors rather than its treats, with men left at home to cook while women went to the pub.