How Does Machine Espresso Work? Machine espresso utilizes precise pressure and mind-blowing filter technology to make the delicious coffee we enjoy. What exactly is it? Espresso is created by forcing hot water at high pressure through finely ground coffee. The process is similar to that of making drip coffee. However, https://www.coffeee.uk/products/amzchef-20-bar-espresso-maker-with-milk-frother