Under Pressure

espresso machine · espresso machines · how-to · Legacy · semi-automatic · semi-automatic espresso machine · videos
Written by Kat
The Espresso Afficionado
Published on Sep 23, 2009
Kat is a passionate coffee enthusiast and seasoned blogger. Read her posts for insights on brew methods, coffee recipes, and machine reviews.
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Espresso machines often list 15 - 17 BAR pumps in their technical specifications, but the general rule of thumb for most espresso extraction is for 9 BARs of pressure. In this video, Gail talks to us about this pressure differential, what you're looking for and talks a bit about the new world of pressure profiling in commercial/professional espresso.

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