Coffee and Espresso Machines Espresso machines use pressure to force water through finely ground and tamped coffee beans. They produce a rich and delicious cup of coffee. Good Housekeeping Institute experts recommend models that can be brewed with 9 bars minimum to ensure the best extraction. Beware of manufacturers that https://www.coffeee.uk/products/4-bar-espresso-latte-cappuccino-maker-stainless-steel