Choosing the Best Ground Coffee For Your Espresso Machine If you own an espresso machine you'll need to ensure that the coffee you're using is of the highest grade. This is because espresso machines require a fine grind for the best extraction. Extraction happens when water passes through coffee grounds https://www-coffeee-uk65260.blog2learn.com/77857914/7-tricks-to-help-make-the-the-most-of-your-coffee-espresso-machines