Important Parts of an Espresso Machine A quality espresso machine must deliver a strong and thick-bodied shot of coffee with a full-bodied flavor and intense aroma. This requires a high pressure and temperature. Pay pay attention to the crema. This golden-brown layer gives rich espressos their characteristic flavor and color. https://www.coffeee.uk/products/swan-retro-black-espresso-coffee-machine-with-frother