Coffee Machine Espresso Espresso coffee is produced by pushing hot water under pressure through grounds. There's a lot going under the hood to ensure consistently high-quality coffee. The key factors are temperature of the water and pressure. You can regulate these variables with a good espresso machine for consistent flavor https://coffeee32356.tinyblogging.com/what-you-can-do-to-get-more-from-your-best-budget-espresso-machine-73529698