You need clean equipment. Cafiza® makes it simple. Buy Cafiza.
Cafiza® Espresso Machine Cleaner Powder is an integral part of the daily maintenance routine for espresso machines. Specifically formulated for effective use in the back flush cleaning process, Cafiza® is designed to combine maximum solubility and cleaning power with easy rinsability. Cafiza® is recommended for use with a wide-range of traditional espresso machines and is NSF certified for metal compatibility and safety.