Used primarily as a flavoring agent, δ-Nonalactone imparts a creamy, coconut-like, and slightly fatty note to food products. It is commonly found in dairy flavors, including butter, cream, and cheese applications, enhancing richness and mouthfeel. Also used in fruit flavors, especially peach and apricot, to add depth and natural character. Frequently employed in baked goods, desserts, and confectionery for its ability to boost creamy and sweet nuances. In fragrance formulations, it contributes a soft, warm, lactonic scent, often used in soaps, lotions, and cosmetics to add a subtle milky or coconut aroma. Its smooth, long-lasting profile makes it valuable in both flavor and fragrance industries for creating natural-identical sensory experiences.