What is Anaerobic Fermentation?

Anaerobic is special in that the process is done devoid of oxygen. Containers of coffee are filled and allowed to ferment without oxygen – usually by way of a one-way valve attached to the lid (very much like the valve on your coffee bag!). Oxygen is removed as the coffees are added, and as fermentation is underway, carbon dioxide that is generated is released out via the one-way valve, preventing any pressure build-up while also preventing oxygen and other gases from entering. The result is a very controlled process of fermentation which yields a very unique flavour profile!