How a Coffee Espresso Machine Works Understanding how complex devices function will make them easier to use and appreciate. You can also determine which device is best for you. Water temperature and pressure are two key factors in espresso machines. Water needs to be between 195 and 204 degrees Fahrenheit https://coffeee-uk22618.acidblog.net/61007334/10-easy-steps-to-start-the-business-you-want-to-start-coffee-espresso-machine-business