Sunshine-cured tobacco, Bastam, Iran Curing and subsequent growing older permit with the slow oxidation and degradation of carotenoids in tobacco leaf. This generates selected compounds from the tobacco leaves and provides a sweet hay, tea, rose oil, or fruity aromatic flavor that contributes for the "smoothness" from the smoke. https://broadfar.com/nuso-heated-tobacco-smarter-alternative-to-traditional-smoking/