Natural Processing: The Original Coffee Process
Long before stainless steel fermentation tanks, thermal shock processing and inoculated yeasts became part of specialty coffee vocabulary, coffee was processed in the simplest way possible: picked from the tree and dried in the sun.
Natural processing, also known as the dry process, is widely considered the oldest coffee processing method in the world, originating in regions like Ethiopia where water scarcity and climate made sun drying the most practical approach. Entire coffee cherries were laid out on patios, rooftops or raised beds and slowly dried before the fruit was removed from the seed.
For centuries, this was coffee processing.
Today, however, coffee processing has evolved into one of the most experimental and debated areas of specialty coffee. Producers are now using anaerobic fermentation, carbonic maceration, thermal shock, cultivated yeasts and even techniques inspired by wine, beer and sake production to create flavour profiles that would have been unimaginable only a decade ago.
These new methods are exciting, but also deeply polarising.
Supporters argue that experimental processing allows producers to differentiate their coffees, add value at origin and unlock entirely new flavour experiences. In an increasingly competitive market, processing innovation can help producers command higher prices and stand out globally.
Critics, however, argue that some modern processing styles can overshadow terroir, varietal character and regional identity. There is also concern that highly manipulated flavour profiles blur the line between coffee and flavour engineering, creating cups that prioritise intensity over clarity and authenticity.
The reality is that coffee processing has become one of the defining conversations in modern specialty coffee, shaping not only flavour and quality, but increasingly the way consumers, roasters and buyers make purchasing decisions.
Our deep dive begins with Natural Processing.