Tobacconist University
Air-Curing
The curing process used for Cigar tobaccos (Dark Air-Cured) and also for Burley tobaccos. After being harvested, cigar leaves are hung in pairs in Curing Barns/Casas de Tabaco for approximately 50 days. During air curing, leaves lose their Chlorophyll and 85% of their humidity.   See Stalk-Curing for advanced learning.

http://www.tobacconistuniversity.org