Mountain Water Process is a unique non-chemical decaffeination process that uses the clear waters from the highest mountain in Mexico, the Pico de Orizaba to gently remove the caffeine from the green beans. The process works by immersing the green beans in water in order to extract the caffeine content. The water preserves the soluble flavour components of the green beans and this protects the original characteristics of the coffee. In order to remove the caffeine the water is passed through a filtration system. The caffeine is extracted, and the Pure Mountain Water Process Decaffeinated green beans are now 99.9% caffeine free.