Buying an Espresso Coffee Machine Espresso machines heat water to near boiling and then force it through tightly-packed ground coffee into portafilter baskets under high pressure. They also supply steam for milk-based drinks. Most espresso machines have programmable settings that can alter the strength and the size of the drink. https://www-coffeee-uk29493.dsiblogger.com/62670945/its-history-of-coffee-espresso-machine