Coffee Processing


  • Photograph: Tonx via Flickr


    We all know that there are many variables that can affect the outcome of a coffee such as weather, altitude, roasting, and so on. Did you know that the way a coffee is processed can also affect the taste of the coffee? Pretty cool, huh?

    Before these “coffee beans” can be used for roasting they first have to be removed from the cherry using various processes like the ones described below. These methods can vary based on regional climate, traditions, and the intended flavor profile.

    Washed / Wet Process
    The washed or wet process method is done by taking the coffee bean and removing it from the cherry using a machine designed to remove the bean from cherry underwater. After, the beans are dried on parchment, either by sun, a drying machine, or even cement patios.

    This type of process will give you a clean coffee with sweet chocolate, nut flavors, or a light fruitiness.

    Pulped Natural
    Pulped Natural is also known as “semi-washed,” which is a style of processing that involves removing the skin of the cherry then leaving the bean to dry. What makes this different from the washed or wet process is that all that sticky remnants from the cherry are still on the bean which ends up drying to the bean. One problem with this process is that the bean have to be monitored closely as they will be vulnerable to bacteria and mold.

    These method can give you a creamy mouthfeel, deep fruity notes, and even hints of earthiness.

    Natural or Sun Dried
    Natural or Sun Dried processing is a traditional form of processing coffee. This method involves the cherry being dried around the bean right after picking and also requires careful attention just like the Pulped Natural method. With this method you also have to make sure that the cherries are turned every so often to avoid uneven drying or spoiling.

    This processing method can lead to a syrupier body than washed coffees and carries very pronounced fruity notes.

    People often exclaim, “This tastes just like blueberries!” upon their first taste of natural-process coffees; others are put off by the intensity of the flavor. ~ via Serious Eats

    I have personally had this happen many times while drinking Natural or Sun Dried coffees. Especially Ethiopian coffees, they smell and taste intensely of sweet blueberries.