How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines force water through the coffee grounds using pressure. This method of brewing produces more strength than drip coffee. These machines require nine bar of pressure to extract the flavor from the ground. There are three kinds of espresso https://www-coffeee-uk46497.post-blogs.com/51245597/15-up-and-coming-espresso-machine-bloggers-you-need-to-keep-an-eye-on