How Does Machine Espresso Work? The machine espresso uses precise pressure and filtering system that is awe-inspiring to make the coffee you enjoy. How exactly does it work? Espresso is made by pushing hot water under high pressure through finely ground coffee. The process is similar to making drip coffee. https://www.coffeee.uk/products/nescafe-de-longhi-mini-me-kapsel-kaffeemaschine-black-arctic-grey