Sun-cured tobacco, Bastam, Iran Curing and subsequent aging permit for the sluggish oxidation and degradation of carotenoids in tobacco leaf. This produces particular compounds during the tobacco leaves and gives a sweet hay, tea, rose oil, or fruity aromatic taste that contributes into the "smoothness" on the smoke. Some https://broadfar.com/oraco-global-trends-in-heat-not-burn-products/