tdi-rick
Addicted to ArboristSite
30ml in 25 seconds works for me but it depends on your tamping technique.
That's pretty much where a commercial machine is set too, somewhere in the 22-25 sec. region, and as you say, it depends on your grind and tamp. (I'm now a service tech for one of the commercial machine manufacturers, they set me up just before I went up the coast)
The short extraction was suggested to me by a switched on barista at my favourite café, Bayleaf in Byron Bay. (they roast their own beans too, Marvel St Roasters)
I can't drink much coffee, sometimes having to stick to tea for months on end as it can really mess my system up (full on anxiety attack stuff, and it can happen on decaf too) but Bayleaf's coffee doesn't do that to me.
SWMBO works as a barista now too, and she does the same, or as best she can with a fully automatic Cafina machine for herself and 'special' customers.
Where she works are about to dump the Cafina's and get fully manual Wega machines, so she can play to her hearts content.
Nothing.. if you enjoy drinking floor sweepings.
hahahahahahaha