Ripen red cherries are selected for mixed microbial fermentation. The cherries are first separated bydensity, tested for sugar content, and classified by quality. After depulping, the cherries, still inparchment form with mucilage, are mixed with pre-cultivated microbes. Fresh fruit puree is addedduring fermentation to supply nutrients, though the resulting flavors may not directly reflect thefruit used.Andrés collects and cultivates natural microbial strains, such as Pichia and Kazachstania yeast, which areextracted and mixed as needed to create custom fermentation solutions. Sometimes, external yeast strainsare also incorporated. The goal of these yeast fermentation processes is to enhance the quality of greenbeans, modify coffee flavor structures, and maximize the potential of different varieties, leading to moreintense and memorable flavor profiles.
