Coffee Machine Espresso Espresso coffee machine makes an intense cup of coffee with hot water forced under pressure through the tightly compacted grounds. There are many processes that take place behind the scenes to ensure the same quality of coffee. The main factors are temperature of the water and pressure. https://coffeee97292.snack-blog.com/29787060/there-s-a-reason-why-the-most-common-best-home-espresso-machine-debate-could-be-as-black-and-white-as-you-might-think