How a Coffee Espresso Machine Works Understanding the intricate way that devices function can make them easier to understand and appreciate. You can also decide which device is the best one for you. Water temperature and pressure are two key factors in espresso machines. Water should be between 195 and https://www-coffeee-uk13681.blognody.com/29789566/10-life-lessons-we-can-take-from-coffee-espresso-machine