In the heart of Les Pâquis, an underused urban courtyard is transformed into a collective fermentation space. Organized around a large central table, it becomes a place of sharing anchored in the neighbourhood.

The structural columns play a dual role: supporting the structure and, through their hollow profile, capturing the CO₂ emitted by fermentation tanks placed at their base. This gas rises to a suspended membrane, which gradually inflates.

Its deployment becomes the project’s visible calendar: the further fermentation progresses, the higher the canopy rises.

Fully inflated, it signals that the cycle is complete and opens a moment of celebration, tasting, and collective gathering.

Open continuously, the courtyard welcomes residents, restaurateurs, and associations to reconnect with an ancestral practice in an urban context, turning food surplus into a starting point rather than an end.