How an Espresso Coffee Maker Works The machine is easy to operate, but it requires precision when grinding and tamping beans. It also takes a long time to warm up. Chris Morocco, Food Director, is a big fan of espresso. When traveling, he carries bags of coffee in his suitcase. https://coffeee-uk71798.59bloggers.com/30244016/why-we-why-we-best-ground-coffee-for-espresso-machine-and-you-should-also