Important Parts of an Espresso Machine A high-quality espresso machine will give a rich and strong shot of coffee, with a full-bodied flavor and intense aroma. This requires high levels of temperature and pressure. Pay focus on the crema. This golden-brown layer is what gives rich espressos their distinctive flavor https://www.coffeee.uk/products/gaggia-manual-espresso-cappuccino-machine-with-magnet-valve