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 the best quality. This is because espresso machines require a fine grind to ensure the highest extraction. Extraction occurs when water flows through https://www-coffeee-uk00639.blogoxo.com/29972952/why-coffee-espresso-machines-will-be-your-next-big-obsession