How to Properly Maintain and Clean an Espresso Coffee Machine Espresso machines push water through the coffee grounds via pressure. This type of brewing results in a stronger beverage than drip coffee. These machines require nine bars of pressure in order to extract the flavor from the ground. Espresso machines https://wwwcoffeeeuk95674.shotblogs.com/11-faux-pas-you-re-actually-able-to-create-using-your-espresso-machine-43846057