Bob, the leaves are harvested, piled for 24 hours then hung in strings and let turn yellow. Once yellowed, small hands of tobacco are briefly (just a few seconds) immersed in lukewarm water and piled again. The piles are left to ferment for 48 hours, then re-piled in inverted order (leaf point out, lower leaves up, inner leaves on the exterior) and left to ferment for another 48 hours. Leaf mass can reach 60 deg C during this phase. After this treatment, the leaves are dark brown, and are dried on strings as per any other dark air tobacco.
Beneventano was added to toscanos to lower (I suppose) the pH of the fire cured Kentucky (THAT is the ferocious stuff!) but it is now almost abandoned due to the high costs of processing, that involves a lot of hand labor.
In some other area outside the Benevento province tobacco was air cured the usual way, much like Nostrano.
pier
ps if some of you guys wants to try “infuocatura” I believe any dark air tobacco works but if you want the original strain you’ll have to wait a few months.