Benefits of an Espresso Machine In an espresso machine, hot water is forced under high pressure through finely ground coffee beans. This creates a luscious, smooth drink that's commonly called espresso. The first espresso machines were steam-powered. These machines utilize an individual boiler to brew multiple drinks at a time. https://www.coffeee.uk/products/de-longhi-stilosa-coffee-machine-15-bar-pressure-grey