Choosing the Best Ground Coffee For Your Espresso Machine If you have an espresso machine, you'll be looking to ensure that the coffee you grind is of top quality. This is because espresso machines require a fine grind to ensure maximum extraction. Extraction occurs when water flows through coffee grounds https://wwwcoffeeeuk95371.humor-blog.com/29163006/10-healthy-habits-to-use-coffee-espresso-machines