How an Espresso Coffee Maker Works The machine is simple to use, but it requires precision when grinding beans and tamping them. It takes some time to warm up. Chris Morocco, Food Director, is a big fan of espresso. When he travels, he packs bags of coffee in his suitcase. https://wwwcoffeeeuk87064.thelateblog.com/30340551/introduction-to-the-intermediate-guide-in-best-ground-coffee-for-espresso-machine