Benefits of an Espresso Machine In an espresso machine, hot water is forced under high pressure through finely ground coffee beans. This produces a smooth, rich drink, known as espresso. The first espresso machines were powered by steam. These machines use one boiler to make several drinks at one time. https://www.coffeee.uk/products/de-longhi-specialista-prestigio-espresso-cappuccino-machine-black-ec9355-bm