How Does Machine Espresso Work? Machine espresso utilizes precise pressure and mind-blowing filter technology to create the coffee we love. What exactly is it? In order to make espresso, hot water is forced under high pressure through finely ground coffee. The process is similar to that of making drip coffee. https://www.coffeee.uk/products/sage-bambino-plus-espresso-maker-1600w-stainless-steel