Coffee and Espresso Machines Espresso machines use pressure to push water through finely ground and tamped coffee beans. They create a rich and delicious cup of coffee. Experts from the Good Housekeeping Institute recommend models that brew at a minimum pressure of 9 bars to achieve optimal extraction. Beware of https://www.coffeee.uk/products/tassimo-my-way-2-coffee-machine-over-70-drinks