How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines force water through the coffee grounds by using pressure. This type of brewing makes an even stronger drink than drip coffee. These machines require nine bar of pressure to extract the flavor from the ground. There are three https://coffeee-uk32283.blogginaway.com/30349246/an-easy-to-follow-guide-to-choosing-your-coffee-machines-espresso