How Does Machine Espresso Work? Machine espresso employs precise pressure and mind-blowing filter technology to make the perfect cup of coffee. How exactly does it work? To make an espresso, hot water is forced under high pressure through finely ground coffee. The process is similar to that of making drip https://www.coffeee.uk/products/de-longhi-nespresso-gran-lattissima-en650-b-1400-w-black