There are two main coffee processing methods: washed coffee and natural coffee. For washed process coffee, the skin and fruit of the coffee cherry are removed and the coffee cherry is washed down to its parchment before drying. For natural process coffee, the coffee cherry is laid out to dry without removing any of the coffee fruit and when it has dried out completely it is dry milled to remove the fruit and skin of the coffee cherry. For this reason, natural processed coffee is sometimes referred to as dry processed coffee, since it doesn't require any water. This makes natural processed coffees popular in regions with less abundant water resources like Ethiopia, where natural coffee production has been a staple of the coffee culture for hundreds of years.
How Natural Process Coffees Taste
Natural coffees are known to have much more funky, interesting flavors than your traditional washed coffee. This is because as the coffee cherry dries the sugars in the fruit will start to ferment, imparting all sorts of unique flavors into the coffee bean that you'll taste as you brew. Farmers take great care to control how quickly the coffee cherries dry by building adjustable shade structures and turning the cherries regularly as they dry. This helps ensure that the coffee doesn't ferment too much or too little, which can affect the taste and quality of the end product.