The Saint-Joseph Turmeric Festival is an immersive celebration dedicated to ‘Safran Péi’, the high-quality local turmeric cultivated in Plaine des Grègues. This traditional gathering was established to highlight the historic golden spice route that shaped the agricultural destiny of the island’s uplands. It stands as a vibrant pillar of Creole identity, showcasing the unique volcanic soil properties that enrich this golden powder. International tourists can discover aromatic spice markets, taste turmeric-infused curries, and purchase therapeutic beauty products. The event provides a major economic lifeline for mountain farmers while uniting the isolated rural communities of the South. Botanists and medical researchers value this festival to analyze the exceptionally high curcumin concentration found in Réunion’s turmeric. Preserving this cultivation legacy protects traditional processing secrets; historically, turmeric was prized by early settlers not just for food, but as a natural textile dye.