Sunlight-cured tobacco, Bastam, Iran Curing and subsequent growing older make it possible for for that slow oxidation and degradation of carotenoids in tobacco leaf. This produces certain compounds in the tobacco leaves and offers a sweet hay, tea, rose oil, or fruity aromatic flavor that contributes on the "smoothness" https://heliskidirectory.com/listings13164427/indicators-on-cigarettes-you-should-know