Bring out the barista in you and get everything you need to get started with tasty coffee specialties. In addition to a piston machine, you need a few things to make good coffees. For example, a coffee grinder, tamper, knock box, and milk pitcher. With the coffee bean grinder, you grind your coffee beans. You push it into the filter holder with the tamper. With the milk pitcher, you froth your favorite type of milk into a micro foam. Finished brewing? You can shake out the coffee grounds in the knock box.