How an Espresso Coffee Maker Works The machine is simple to use, however it requires precision when grinding and tamping beans. It takes a while to warm up. Chris Morocco, Food Director, is a big fan of espresso. He has bags of coffee beans in his luggage each time traveling. https://www-coffeee-uk51582.blogvivi.com/30370106/10-things-your-competitors-can-lean-you-on-best-ground-coffee-for-espresso-machine