How an Espresso Coffee Maker Works The machine is simple to use, but it requires accuracy when grinding and tamping beans. It takes a while to warm up. Chris Morocco, Food Director Chris Morocco, Food Director of espresso. He packs bags of coffee beans in his luggage each time traveling. https://www-coffeee-uk48589.daneblogger.com/29289927/avoid-making-this-fatal-mistake-with-your-best-ground-coffee-for-espresso-machine