How Does Machine Espresso Work? Machine espresso employs precise pressure and incredible filter technology to produce 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-uk53780.newbigblog.com/35749338/the-ultimate-glossary-of-terms-about-espresso-machine-sale