Coffee is generally prepared in two ways: espresso and drip brew. Drip brew coffee is prepared by pouring water over coffee which is contained in a filter. Espresso is an Italian coffee beverage prepared by forcing hot water through fine ground coffee beans.
Espresso is strong and has a robust flavor. Espresso coffee differs from the other variety of coffee, drip-brewed coffee, by its thick and concentrated consistency. Espresso is generally served in small amounts without any sweeteners or milk. Espresso should be consumed immediately after preparation, because it is highly reactive with oxygen.
There are various other types of espresso, like cafe latte, cafe mocha and cappuccino. All these can be made with one ‘shot’ of espresso.
An Espresso machine is used to prepare the espresso coffee. The machine forces water at 195 F and 9 bar of pressure through a puck of finely ground coffee. It takes about twenty seconds for 1.5 ounces of espresso to be prepared. The time can be modified by increasing the grinding quality – using finer or coarser coffee. Espresso machines also have steam wands, which is used to froth and steam milk for preparing milk-based espresso beverages like cappuccino and latte.
The espresso machine comes in its true element at the hands of a Barista. There are a many elements on which the quality of espresso depends.
There are various types of Espresso machines available in the market. The various kinds are:
Stove Top Espresso Maker:
The stove top espresso maker is the simplest to use. It is made up of the base, brewing basket, basket screen and the collection chamber. It is small and easily transportable and is one of the main kinds of non-electrical espresso machines.
The coffee is placed in the brewing basket, once the base is filled with cold water. Once the basket screen is placed over the brewing basket, the collection chamber is attached back to the base of the machine, and the machine is placed over a heat source.
Steam Espresso Maker:
Though the steam espresso maker is similar to the stove top, it is a steam unit and works on the pump-power principle. It also has a portafilter, which is a filter holding/coffee dispensing unit.
Piston Driven Espresso Maker:
The piston driven espresso machine is the oldest type of espresso machines. They were first made when espresso was first discovered. The modern espresso maker machine is an upgrade of this retro espresso maker. Invented in 1938, it is used widely in thematic parties or shops.
Pump Driven Espresso Machine:
The pump-driven espresso machine is the most used type of espresso machine commercially. It is a variation/upgrade of the piston driven espresso maker, which has a pump instead of a piston.
Automatic Espresso Machine:
The automatic espresso machine produces a more consistent amount of espresso, as compared to the other types of machines. Water flows into the flowmeter, until it reaches the previously programmed level and then the ‘shot’ is cut.
Super Automatic Espresso Machine:
This machine automatically grinds the coffee. Some machines can adjust the shot temperature and water flow.
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