Swiss-Water Decaffeination Process
In the Swiss Water Process, the green coffee beans are soaked in hot water, which allows the caffeine to be extracted from the beans. The water, now containing the caffeine and other coffee solubles, is then passed through activated charcoal filters that trap the caffeine molecules while letting the other coffee flavor compounds pass through. This filtered water, now free of caffeine, is then used to soak a new batch of green coffee beans, repeating the process.
By using this method, the Swiss Water Process effectively removes 99.9% of the caffeine from the coffee beans while maintaining the natural flavors and characteristics of the beans. It is considered a more natural and environmentally friendly decaffeination process compared to chemical methods.