There's no waste
Coffee is one of the world’s most sustainable products because there’s no waste.
Parchment is used as energy to fuel coffee dryers, the skin or ‘cascara’ is used as a fertiliser, flower for baking or tea infusions and coffee beans that don’t make export are consumed locally.
Even the grounds of roasted coffee are used to make fuel. Every part is used unless of course, you don’t finish your coffee!