Nespresso uses coffee decaffeinated with water and carbon dioxide from natural sources. For the Nestlé -owned water decaffeination process, green coffee grains are soaked in hot water in order to dissolve caffeine. The green coffee beans free of caffeine are dried while the water extract goes through active carbon where caffeine is absorbed. Dried green coffee beans are re-soaked in the water extract now free of caffeine. Subsequently, green coffee beans are dried and roasted. Decaffeination with carbon dioxide is a very gentle process occuring under pressure at almost room temperature. Caffeine is extracted very selectively, reducing any unwanted changes to the coffee bean composition to a very minimum. The residual caffeine content in decaffeinated coffee at Nespresso is below 0.1% w/w, in order to comply with the most stringent regulatory requirements in this field. Nespresso has several varieties of decaffeinated coffee. Both extraction processes allow to extract caffeine while keeping intact the aromas and flavours of coffee. The decaffeinated Nespresso varieties undergo the same quality controls applied to other Nespresso varieties.
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