How Does Machine Espresso Work? Machine espresso uses precision pressure and mind-blowing filter technology to make the delicious coffee we enjoy. How exactly does it work? Espresso is created by forcing hot water at high pressure through finely ground coffee. The process is similar to making drip coffee. However, it https://www.coffeee.uk/products/smeg-50-s-retro-style-espresso-coffee-machine-cream