Cigar Ash Shades: a Detailed Look

 

(Cigar Inspector) ... Those white spots show that the burn is more complete in those particular areas. That means that, for some reason, the combustion is either improved in those spots or worsened around them.
Two reasons may explain possible origin(s) of the phenomenon: originating from either outside or inside the wrapper leaf. In other words, we could assume that the manifestation of white spots on the wrapper during its combustion is due to an external contact or to a systemic source. Continued