Choosing the Best Ground Coffee For Your Espresso Machine If you own an espresso machine you will want to make sure that the coffee you grind is of the highest quality. This is because espresso machines require a precise grind for maximum extraction. Extraction happens when water passes through coffee https://www-coffeee-uk98019.thezenweb.com/the-little-known-benefits-of-coffee-espresso-machines-67669363