I can't get a satisfactory (or at least consistent) answer on this point, so this can be a sort of survey. When you guys/gals time your 'spro extractions, do you start your timer when you press the button (or pull the lever or whatever), or when you see the very first drops come out? I ask because it seems that, from machine to machine, it takes a differing amount of time for water flow to begin after the button/switch/whatever is activated. On my old Astoria Argenta, drops would start appearing about 1-1.5 seconds after I began brewing, but on the Aurelia (which has a "preinfusion") it seems to take more like 2-4, depending on the day and dose.
Let me know how you count, and why.
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