Sunlight-cured tobacco, Bastam, Iran Curing and subsequent ageing enable with the gradual oxidation and degradation of carotenoids in tobacco leaf. This provides selected compounds while in the tobacco leaves and gives a sweet hay, tea, rose oil, or fruity aromatic taste that contributes into the "smoothness" with the smoke. https://broadfar.com/the-benefits-of-switching-to-nusos-heated-tobacco-solutions/