http://caffenu.com/ “Cleaning is not a maybe. It is a must! Every time you extract a shot of espresso, it leaves a layer of oil behind in the machine. Flushing with water alone does not help! If you don´t clean your machine properly, it will affect the taste of your coffee, and more importantly your health. The Caffenu® cleaning capsule is an innovative product that makes it possible for Nespresso® machine owners to clean their equipment properly, so they can enjoy fresh coffee