Mulling
A finishing step done on some, but not all tobacco, before it is used in a factory. Tobacco is mulled in a hot, humid room to finish tobacco leaves that may have been on the side or the top of a pilón. Away from the center of a pilón, the temperatures are not high, so tobacco may miss part of the fermentation process. The mulling room, at 95 to 100 degrees, with humidity of 90 percent, darkens and sweetens the tobacco as needed.