Solar-cured tobacco, Bastam, Iran Curing and subsequent aging permit for that gradual oxidation and degradation of carotenoids in tobacco leaf. This provides certain compounds during the tobacco leaves and provides a sweet hay, tea, rose oil, or fruity aromatic taste that contributes towards the "smoothness" in the smoke. On https://toplistar.com/story21141507/not-known-factual-statements-about-cigarettes