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.
Under Pressure
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Kat is a passionate coffee enthusiast and seasoned blogger. Read her posts for insights on brew methods, coffee recipes, and machine reviews.
