What is dry processing (natural)?
In natural processing, whole coffee cherries including the fruit flesh dry in the sun for 2–4 weeks. This produces more sweetness, body, and often fruity-fermented notes.
Why that is
Dry processing (also called natural or dry process) is the oldest method of coffee processing and the simplest in concept: the harvested cherries are spread out in the sun and dry whole — fruit flesh, mucilage, and parchment skin remain on the bean. Only when the cherry has dried to 10–12% moisture is the dry husk mechanically removed (hulling).
During the 2–4 weeks of drying, something crucial happens: the fruit sugar from the flesh penetrates the bean. Simultaneously, a natural fermentation takes place — yeasts and bacteria slowly break down the fruit flesh, creating aroma compounds that make the coffee sweeter, fruitier, and more full-bodied.
The challenge: natural processing is risky. The cherries must be turned regularly so they dry evenly and don't develop mould. With too much humidity or too little air circulation, off-flavours develop — musty, vinegary, overripe. A well-made natural is spectacular; a poorly made one is undrinkable. Quality control demands experience and constant attention.
Typical natural profiles: Ethiopian naturals taste of strawberry, blueberry, mango, or tropical fruits. Brazilian naturals are calmer — chocolate, nut, dried fruits, low acidity. In the specialty scene, naturals have experienced a boom in recent years because their expressive flavour profiles differ markedly from washed coffees.
Natural coffees require less water than washed ones — an advantage in dry growing regions where water scarcity is a problem. Ethiopia, Brazil, and parts of Indonesia traditionally rely on the dry method.
In practice at Green Wall Coffee
At our café on Sophienstraße 27 in Berlin-Lichtenberg, there's nearly always a natural on the menu — often as espresso, because the sweetness and body come through especially well there. When a guest drinks a natural as espresso for the first time and asks "Does that taste like strawberry?", I know: the processing worked.
If you want to taste the difference yourself: Sophienstraße 27, Berlin-Lichtenberg. Mon–Fri 8am–5pm, Sat 10am–5pm.
Further reading
Related questions:
- What does honey process mean and what variants are there?
- What Is Anaerobic Fermentation in Coffee?
- How does the processing method affect the flavour?
Also relevant:
- Why does Ethiopian coffee taste fruity and Brazilian coffee nutty? — Growing, Origin & Climate
- Which beans are best for cold brew? — Cold Brew & Iced Coffee
All questions in this topic: Harvesting & Processing