Mucilage

Layers of the Arabica Coffee Cherry, diagram, Sweet Marias Coffee
Layers of the Arabica Coffee Cherry, diagram, Sweet Marias Coffee

Mucilage indicates the fruity layer of the coffee cherry, between the outer skin and the parchment layer that surrounds the seed.

It readily clings to the inner parchment holding the green bean. Think of the way some fruity pulp clings to a plum seed, or some peach seeds. Breaking down the mucilage is the target of coffee fermentation in wet-processing, or mechanical removal with friction using machines like the Penagos Demucilager.

With Pulp Naturals aka Honey process, the fruit mucilage is allowed to dry onto the parchment and removed later at the dry mill.

Layers of the Arabica Coffee Cherry, diagram, Sweet Marias Coffee
Layers of the Arabica Coffee Cherry, diagram, Sweet Marias Coffee
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