The Fête du Chouchou is a major agricultural event held in the UNESCO-listed village of Hell-Bourg in the Salazie caldera. This celebration honors the chayote, the vegetable that has sustained the economy and culture of this mountain region for over a century. It is a powerful manifestation of regional identity, highlighting the unique agrarian traditions of the Reunionese ‘cirques.’ Visitors experience a traditional mountain festival featuring massive displays of vegetables, local orchestras, and authentic mountain cuisine. The festival fosters strong social cohesion within the isolated community of Salazie and attracts thousands of supportive urban visitors. For ethnographers, the event is a key example of how a single crop can define the social and cultural architecture of a territory. Preserving this legacy ensures that the resilient spirit of Hell-Bourg remains a regional treasure.