We product over 100L of coffee chaff a day. This is produced when we roast the coffee, and it has a biscuity smell.
It is a nutrient dense bi product of roasting, and we donate it to a local community garden to enrich their compost.
We are also donating some to our partners at Trees for Cities; it is great for adding nutrients to soil, so Trees for Cities reuse it when planting new trees.