There are lots of coffee flavors and variations today and one of the most popular is the Espresso which brewed by forcing steam or hot water under pressure through finely ground coffee. Sounds complicated, but did you know that the machine we use to produce our favourite Espresso Coffee have gone through several remodelling before the ease of use we experience today was made possible? Invented in 1901, multiple machine designs have been created to produce espresso. An ideal double shot of espresso should take 20-25 seconds to arrive, timed from when the machine's pump is first turned on.
Steam-driven
A steam-driven design operates by forcing water through the coffee with the use of steam or steam pressure. The first espresso machines were steam types, produced when a common boiler was piped to four group heads so that multiple types of coffee could be made at the same time
Piston-driven
The design uses a lever, pumped by the operator, to pressurize hot water and send it through the coffee grinds. The act of producing a shot of espresso is termed pulling a shot because these lever-style espresso machines required pulling a long handle to produce a shot.
Pump-driven
Instead of using manual force, a motor-driven pump provides the force necessary for espresso brewing. This is a refinement from the piston machine and made the pump-driven espresso machine the most popular design in commercial espresso bars. Commercial or some high-end home machines are often attached directly to the plumbing of the site; lower-end home machines have built-in water reservoirs. - 16650
Steam-driven
A steam-driven design operates by forcing water through the coffee with the use of steam or steam pressure. The first espresso machines were steam types, produced when a common boiler was piped to four group heads so that multiple types of coffee could be made at the same time
Piston-driven
The design uses a lever, pumped by the operator, to pressurize hot water and send it through the coffee grinds. The act of producing a shot of espresso is termed pulling a shot because these lever-style espresso machines required pulling a long handle to produce a shot.
Pump-driven
Instead of using manual force, a motor-driven pump provides the force necessary for espresso brewing. This is a refinement from the piston machine and made the pump-driven espresso machine the most popular design in commercial espresso bars. Commercial or some high-end home machines are often attached directly to the plumbing of the site; lower-end home machines have built-in water reservoirs. - 16650
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