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How Do They Work?
2008 Personnel Trainer
The Gourmet Retailer Magazine
February 2008
The Gourmet Retailer Magazine
February 2008
Copyright © 2005 Gourmet's and its licensor's. All Rights Reserved.
Website designed by Gourmet's, LLC webpage productions.
Website designed by Gourmet's, LLC webpage productions.
All pump/pressure systems pump cold water through
fast-heating devices ( a boiler or a thermoblock) and
force the hot water through tamped, finely ground
coffee. To create the perfect crema espresso, the actual
pressure should be between 9 and 15 ATM (or bar)
when the hot water passes through the coffee. Good
pumps have at least a 15 - ATM pressure capacity to
ensure longer pump life and accommodate various
coffee grinds. The grind's fineness creates resistance to
the water under pump pressure. A non-pump electric
espresso machine generates on average only 3 - ATM,
insufficient pressure to produce a high-quality espresso.
With just the push a button, automatic coffee centers
grind, tamp and pressure-brew a programmed amount of
coffee, and then discard the used coffee in less than 50
seconds. They can brew from a 1-oz. cup of espresso to
two large cups of coffee at a time.
fast-heating devices ( a boiler or a thermoblock) and
force the hot water through tamped, finely ground
coffee. To create the perfect crema espresso, the actual
pressure should be between 9 and 15 ATM (or bar)
when the hot water passes through the coffee. Good
pumps have at least a 15 - ATM pressure capacity to
ensure longer pump life and accommodate various
coffee grinds. The grind's fineness creates resistance to
the water under pump pressure. A non-pump electric
espresso machine generates on average only 3 - ATM,
insufficient pressure to produce a high-quality espresso.
With just the push a button, automatic coffee centers
grind, tamp and pressure-brew a programmed amount of
coffee, and then discard the used coffee in less than 50
seconds. They can brew from a 1-oz. cup of espresso to
two large cups of coffee at a time.
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