[AdamJoshua]

Well could be from different things, do you use a punch or a V or straight cut. I looked this up once and it's hard to actually find info (at least I didn't), I did find this that someone printed from a manufacturer who contacted a factory.

“This grotesque syrup is somewhat of an enigma. We assume that it is sap left inside the stem of the leaf which doesn’t evaporate during fermentation. It is extremely rare, but by far one of the most pungent and foul substances of the world. It has been my experience that cutting below the ooze usually ends the matter.”