France's largest bouillon pushes opening to November

Bouillon sur Seine, the 570-seat restaurant billed as France's largest bouillon, will not open in October as first announced and now targets early November on Boulogne-Billancourt's Île Seguin.

The operators set an October 1, 2026 opening when the project was first detailed this summer. Local outlet Sortiraparis, updating its coverage on October 23, now lists the date as "early to mid-November," with no fixed day confirmed.

Bouillon sur Seine's opening pushed back

The room is enormous; for now, the only thing still under construction is the calendar.

No public reason has been given for the delay. The restaurant's Instagram account, its only live channel so far, has not posted beyond the November window, and no menu or price list has been released.

The scale of the build may explain the caution. The dining room covers 1,100 square metres, with seating for 570 guests, including around 100 places on a terrace that runs along the Seine.

Behind France's largest bouillon

Christopher Préchez and Benjamin Moreel are behind the project, which they have worked on since 2019. The pair previously revived the Petit Bouillon Pharamond, a 19th-century bouillon near Les Halles, before selling it in 2024. They now also run Le Bon Bock in Montmartre, Bouillon Alcide in Lille and the Petit Bouillon de la Gare in Asnières-sur-Seine.

Mickael Salgueiro has joined them on Bouillon sur Seine. The kitchen is led by Nicolas Roudier, who trained under Alain Passard at L'Arpège and under Éric Fréchon at Le Bristol before moving into the bouillon format.

The plan is continuous service from breakfast through dinner, with a rotating daily special, house-made lemonades served all day and a takeaway counter. Bouillon-style pricing, the operators have said, means keeping dishes affordable despite the size of the room.

Bouillons, the large and inexpensive dining rooms that trace back to 19th-century Paris, have multiplied again over the past decade. Bouillon Chartier, in business since 1896, remains the format's benchmark in the capital and features in our guide to what to eat in Paris. A newer arrival, Le Poisson Volant, shows operators are still betting on large dining rooms within the city.

Île Seguin, already home to the concert hall La Seine Musicale, would add a 570-seat bouillon to that list once the doors open.

Until a firm date lands, the only certainty is the address: Île Seguin, on the river that gives the restaurant its name.