Water-processed decaf

Water-processed decaffeinated coffee, also known as “Swiss Water Process” or “SWP” decaf, is a method of removing caffeine from coffee beans using only water. This method is considered to be one of the most natural and environmentally friendly methods of decaffeination.

The process starts by soaking the green coffee beans in filtered water to extract all the soluble material from the beans. The water solution is then filtered through a carbon filter, trapping caffeine, but allowing coffee solids to pass through. Coffee beans are then returned to the flavour saturated water, allowing them to reabsorb everything but the caffeine.

an infographic showing the various stages of the Swiss Water process
Infographic via Swisswater.com

This method is also known for maintaining the flavour and aroma of the coffee beans. It helps to retain the coffee’s original flavour profile and it doesn’t add any unwanted flavours to the coffee. This makes it a popular choice among specialty coffee roasters and coffee enthusiasts.

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