Benefits of an Espresso Machine In an espresso machine hot water is pushed at high pressure through finely ground coffee beans. This results in a rich smooth drink that's known as espresso. The first espresso machines were steam-powered. They utilize a single boiler to brew multiple drinks at a time. https://www-coffeee-uk98701.idblogz.com/30290387/a-brief-history-of-the-evolution-of-espresso-machine