How Does Machine Espresso Work? Machine espresso uses precision pressure and mind-blowing filter technology to create the delicious coffee we enjoy. How does it work exactly? Espresso is made by pushing hot water under high pressure through finely-ground coffee. The process is similar to making drip coffee. However the pressure https://www.coffeee.uk/products/de-longhi-ecp3630-espresso-cappuccino-machine-with-adjustable-frother