Why Add Yeast Caravela's Coffee Talks

Added yeasts can dramatically affect the taste of coffee, and this all happens during the fermentation step. This step, which once was simply a means to remove the mucilage is now understood as key to flavour development. There are many microbes responsible for this and the types of naturally occurring yeasts and bacteria will have a huge impact on the taste of the coffee. If these yeasts and bacteria already exist and can be found everywhere, why would you add a different stain of yeast...