The most popular type of espresso machine today, the pump-driven espresso machine uses a motor to create the necessary pressure required to force water through the roasted, ground coffee to brew one or more shots of espresso. Thus with a pump-driven espresso machine, no manual force is required.
Reservoirs vs. Plumbed-In Pump-Driven Espresso Machines
In a pump-driven espresso machine, the water may be contained within a reservoir in the machine (this is usually the case with the lower cost home models), or may come directly from the on-site plumbing. The pump-driven espresso machine is considered an improvement from the piston-driven espresso machines.
Espresso and Coffee Brewing Tips
For more espresso tips see our detailed coffee flavor profiles of gourmet coffee and instructions on preparing Espresso Drink Recipes. For step-by-step instructions see Pulling A Perfect Espresso Shot as well as How to make Lattes and Cappuccinos.
For tips on brewing the perfect cup of gourmet coffee see our section on Coffee Brewing, and detailed definitions of coffee terminology can be found in the comprehensive Coffee and Espresso Glossary. Also savor out the World's Best History of Coffee.