How Does Machine Espresso Work? Machine espresso uses precision pressure and amazing filter technology to make the coffee we love. But how exactly does it work? Espresso is made by forcing hot water at high pressure through finely ground coffee. The process is similar to that of making drip coffee. https://wwwcoffeeeuk73686.bloggazza.com/29133028/why-you-should-concentrate-on-improving-espresso-machine-sale