​​It should be noted that with this article, I do not intend to establish a cultural superiority on the part of the West to the detriment of the third world, as it is commonly called. I firmly believe that there is no culture superior to another, however they are all different, each with its positive side and its flaws. I do not agree with the kind of superiority that some feel when they come to Africa "advising" how to live, what is the best solution to problems, and even how to grow and process coffee. Africa must find its own solutions!

1.- Origins of fermentation.
 
Fermentation is older than any ancient civilization that we know of today. Several archaeological excavations have found jars with the remains of wine that are approximately 8,000 years old.

​After much trial, error and careful observation, almost all civilizations began producing fermented beverages (and foods as well), but mainly wine and beer. It started with the fermentation of water with honey in Asia, then the Egyptians, Babylonians and Romans used grapes to produce wine, the Chinese used rice instead to produce wine and other civilizations produced beer with barley. Chicha was produced in South America, through the fermentation of corn.

​Suppose we are going to process the lot A, which will be separated according to a series of characteristics that in the industry we call traceability (origin, altitude, process, cultivation, fermentation, etc.); The quality of lot A will be defined by the way in which its cherries are harvested. After the harvest, there will be no possibility of increasing the quality of this lot, we can only maintain it and try very hard not to reduce it.

​But how has this happened? How can such an underestimated and undervalued origin by the world of specialty coffee, can become a new quality trend in many countries, and a No. 1 favourite for many coffee enthusiasts around the world in such a short time?

​1º THE DENSITY OF THE LOT

During the washing process, there are many more opportunities for selection and grading than in the natural process. Although, lately in origins such as Ethiopia and Burundi, where there are cooperatives focusing on quality, they have begun to introduce hand selection and flotation grading, prior to the drying of the cherries on patios or African beds.

​Only two centuries ago, we began to understand this important process, when in 1854 the French chemist Louis Pasteur determined that fermentation is caused by yeast. In very simple terms, yeast is an unicellular microorganism classified as a fungus, which perform the decomposition of sugars by alcoholic fermentation.