Decaf: The NESCAFÉ® Way
Before being roasted, the coffee beans are immersed in a flow of hot water to extract the majority of the caffeine, since caffeine is soluble in water. There are various types of coffee beans, the main two being Arabica and Robusta, both with different concentrations of caffeine. Therefore, the parameters of the decaffeination process will vary depending on the mixture of coffees that need decaffeinating.
Once the caffeine has been extracted from the coffee beans in the liquid phase, the coffee beans are then dried using hot air that evaporates the water used in the previous process. Once the usual moisture of coffee beans is recovered, the result is a coffee bean with a fraction of the caffeine, 97% less to be exact, which retains the same properties of flavour and feel as regular or untreated coffee beans, but with a typical cup of decaf coffee containing 2mg of caffeine, in comparison of between 70 – 140mg in a cup of regular coffee. From this moment on, the coffee beans are ready for roasting following the same method as regular or untreated coffee, which gives rise to NESCAFÉ® decaffeinated coffee.