Choosing the Best Ground Coffee For Your Espresso Machine If you have an espresso machine you will want to make sure that the coffee you grind is of the best quality. This is because espresso machines require a fine grind for the highest extraction. Extraction is when water passes through https://www-coffeee-uk97900.blogthisbiz.com/36005041/15-startling-facts-about-coffee-espresso-machines-that-you-never-known