Benefits of an Espresso Machine In an espresso machine hot water is pushed at high pressure through finely grounded coffee beans. This results in a smooth and rich drink known as espresso. The first espresso machines were powered by steam. They use a single boiler to brew several drinks simultaneously. https://www-coffeee-uk70676.mybloglicious.com/50821255/three-greatest-moments-in-espresso-machine-history