How a Coffee Machine Works A coffee machine can make it simple to make a jolt of java at home. From simple single-cup devices to espresso machines, they will automatize the process and take care of everything for you. There's a machine to suit anyone, no matter if you're a coffee enthusiast or an insomniac. Learn how to make the perfect cup. The Reservoir You put water into the reservoir and then it moves through the rest of your coffee machine. You also put your coffee grind into the portafilter, press it down, and then switch on the machine to prepare to brew. Drip coffee machines are an industry standard and can be a time-saver for Coffeee those who prefer an Breville Bambino Espresso Machine: Stainless Steel Quality that is ready when they get up. The device has a range of features that can be customized to your experience. They include a programmable clock and the option of using capsules or ground coffee. Keep your reservoir clean in order to avoid the accumulation of limescale.