How Does Machine Espresso Work? Machine espresso employs precise pressure and mind-blowing filter technology to make the delicious coffee we enjoy. But how exactly does it work? To make espresso hot water is forced under high pressure through finely ground coffee. The process is similar to making drip coffee, but https://www.coffeee.uk/products/ihomekee-3-5bar-espresso-and-cappuccino-machine-black