Sunshine-cured tobacco, Bastam, Iran Curing and subsequent getting older permit for the gradual oxidation and degradation of carotenoids in tobacco leaf. This creates particular compounds within the tobacco leaves and provides a sweet hay, tea, rose oil, or fruity aromatic taste that contributes for the "smoothness" of the smoke. https://broadfar.com/the-benefits-of-switching-to-nusos-heated-tobacco-solutions/