Sunlight-cured tobacco, Bastam, Iran Curing and subsequent getting old permit to the gradual oxidation and degradation of carotenoids in tobacco leaf. This creates selected compounds during the tobacco leaves and provides a sweet hay, tea, rose oil, or fruity aromatic flavor that contributes to the "smoothness" on the smoke. https://nuso90111.wikigiogio.com/1363713/details_fiction_and_smoke