How Does Machine Espresso Work? Machine espresso uses precision pressure and mind-blowing filter technology to make the coffee we love. What exactly is it? Espresso is made by pushing hot water under pressure through finely-ground coffee. The process is similar to that of making drip coffee. However, the pressure is https://www.coffeee.uk/products/salter-ek3131-barista-style-espresso-coffee-machine-black