How Does Machine Espresso Work? Machine espresso utilizes precise pressure and mind-blowing filter technology to create the coffee we love. What exactly is it? Espresso is made by pushing hot water at high pressure through finely-ground coffee. The process is similar to making drip coffee. However the pressure is the https://www.coffeee.uk/products/gaggia-ri8423-espresso-machine-freestanding-manual-white