The Flavour of Sustainability: Mediterranean Aromatic Plants as Enablers of Nutrient-Dense and Low-Salt Gastronomy

Transitioning to sustainable, plant-forward diets, such as the Planetary Health Diet is a global priority; however, the palatability gap remains a formidable barrier, as consumers often perceive low-sodium, plant-centric diets as sensory-deficient. While aromatic herbs could bridge this gap, the current literature rarely integrates their sensory, ecological, phytochemical, and cultural dimensions. This narrative review explores how Mediterranean aromatic plants indigenous to the Maltese Islands function as sensory and molecular catalysts to bridge this gap. Through a thematic synthesis (2005–2026) integrating ethnobotanical evidence with molecular nutrition and sensory science, the Maltese archipelago is examined as a small-island ecological model. Chronic abiotic stressors, including high salinity and intense solar exposure, induce phytochemical priming, significantly enhancing secondary metabolites like polyphenols and terpenoids. These compounds establish a folk–medicine bridge, where traditional culinary practices align with modern biochemical validation. These bioactives demonstrate a capacity to modulate the NF-κB inflammatory axis, mitigate systemic inflammaging, and support the gut–microbiome–brain axis. Furthermore, these aromatics serve as translational tools for EAT-Lancet 2025 targets by facilitating cross-modal sensory compensation for sodium reduction and improving nutrient bioaccessibility via the culinary entourage effect. The TASTE-MED framework positions culinary nutrition as a vital translational bridge, asserting that flavour is a prerequisite for dietary sustainability and aligning individual molecular resilience with broader planetary health goals.