There is a few methods of Decaffeinated Process: Direct and Indirect process, By supercritical gas, Using water and caffeine free extract (Swiss Water Process). Sarika Gourmet Coffee purchase decaffeinated coffee using Swiss Water Process.

Swiss Water Process
Producing flavor charged water
(soaking green bean)



Extracting caffeine from coffee with charged water
(Presoak using Methylene Chloride)



Extracting caffeine from the water solution using activated carbon
(Filtering using water)



Reactivating the carbon
(Burn the caffeine and drying the beans)



Drying, cleaning and bagging
(Remove broken bean and polishing)