Choosing the Best Ground Coffee For Your Espresso Machine If you own an espresso machine, you'll be looking to ensure that your ground coffee is of the best quality. This is because espresso machines require a fine grind for the best extraction. Extraction is when water passes through coffee grounds https://coffeeeuk01982.bloguetechno.com/10-things-everyone-gets-wrong-concerning-coffee-espresso-machines-65173918