How a Coffee Espresso Machine Works Understanding how complex devices work can make them easier to use and appreciate. You can also determine which device is the best one for you. Temperature and pressure of water are two important aspects in espresso machines. Water should be between 195 and 204 https://coffeeeuk70400.blogprodesign.com/51845291/10-life-lessons-we-can-take-from-coffee-espresso-machine