Sunshine-cured tobacco, Bastam, Iran Curing and subsequent growing older enable with the sluggish oxidation and degradation of carotenoids in tobacco leaf. This produces specified compounds within the tobacco leaves and provides a sweet hay, tea, rose oil, or fruity aromatic flavor that contributes to your "smoothness" with the smoke. https://broadfar.com/oraco-pioneering-a-smokeless-future-with-innovative-nicotine-delivery/