Winnowing
After cracking the beans, nibs and husks need to be winnowed, which means separating cacao nibs and cacao husk. Suction and gravity are the key players here.
Husk and nibs are fed into the upper tube opening. A shop vac is creating suction in the bucket. Because husks are lighter than nibs, they get sucked into the bucket and the heavier nibs (thanks gravity!) fall down into a bowl.
Voilà, nibs and husks are separated.
