Choosing the Best Ground Coffee For Your Espresso Machine If you own an espresso machine you will be looking to ensure that your ground coffee is of top quality. This is because espresso machines require a precise grind for the best extraction. Extraction is when water passes through coffee grounds https://coffeee38794.verybigblog.com/29365181/10-things-everybody-gets-wrong-about-the-word-coffee-espresso-machines