Sunlight-cured tobacco, Bastam, Iran Curing and subsequent getting old enable to the slow oxidation and degradation of carotenoids in tobacco leaf. This creates sure compounds during the tobacco leaves and provides a sweet hay, tea, rose oil, or fruity aromatic flavor that contributes into the "smoothness" in the smoke. https://getidealist.com/story21155849/helping-the-others-realize-the-advantages-of-tabacco