How Does Machine Espresso Work? Machine espresso employs precise pressure and amazing filter technology to make the coffee we love. How exactly does it work? Espresso is created by forcing hot water under high pressure through finely ground coffee. The process is similar to making drip coffee, but the difference https://www.coffeee.uk/products/de-longhi-ecp3630-espresso-cappuccino-machine-with-adjustable-frother