Choosing the Best Ground Coffee For Your Espresso Machine If you own an espresso maker you'll need to ensure that the coffee you're using is of the highest quality. This is because espresso machines need a fine grind to extract the most amount of coffee. Extraction is when water passes https://www-coffeee-uk33079.dreamyblogs.com/30155607/what-is-coffee-espresso-machines-and-why-is-everyone-talking-about-it