Did you know that changing the water pressure applied to the bed of coffee when making espresso can dramatically alter the taste? In this video Luke is using the La Marzocco GS3 and varying the pressure profiles to see how it changes the flavor of coffee. He extracts coffee using 3 bar, 6 bar and 9 bar pressure on the GS3 and analyses how it tastes in both milk and espresso style coffee.
In his experiment he discovers some interesting findings in his results.
Unedited Video Transcript