Solar-cured tobacco, Bastam, Iran Curing and subsequent ageing allow to the slow oxidation and degradation of carotenoids in tobacco leaf. This generates specific compounds during the tobacco leaves and offers a sweet hay, tea, rose oil, or fruity aromatic flavor that contributes to your "smoothness" of the smoke. Notice: https://broadfar.com/oraco-pioneering-a-smokeless-future-with-innovative-nicotine-delivery/