Espresso Coffee Machines

Types of Espresso Machines

The basic principles are to extract only the best part, using water which is not quite boiling and under a lot of pressure. Machines that can do this all at once were only invented in this century. The machine works by first filling the porta-filter with about 6.5 grams of finely grounded coffee beans. Then the beans are tamped or compressed with about 30 pounds of force resulting in a puck.

 
 
 

When the machine is turned on, a pressurized stream of hot water and/or steam is forced through the porta-filter and espresso is poured into the glass.

There are several types of electric home espresso machines on the market. They can be divided into three kinds: the electric steam, the electric piston, and the electric pump/boiler. All of these require a separate coffee grinder, except the super-automatic pump machine.



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  1. The Basics
  2. Strange Brew
  3. Espresso Machines - A Brief History
  4. Anatomy of a Coffee Machine
  5. Types of Espresso Machine
  6. Stovetop Espresso Machine
  7. Electric Piston Espresso Machine
  8. Electric Steam Espresso
  9. Electric Pump/Boiler Espresso
  10. Home Coffee Machines
  11. Commercial Espresso Machines
  12. Equipment Maintenance