Important Parts of an Espresso Machine A good espresso machine should deliver a strong and thick-bodied shot of coffee with a full-bodied flavor and intense aroma. This requires a high level of pressure and temperature. Pay close attention to the crema. This golden-brown layer gives rich espressos their characteristic taste https://www.coffeee.uk/products/gaggia-ri8425-22-grangaggia-deluxe-rot-premium-coffee-machine