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Don't know what I'm doing wrong

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  • #31
    Hi Kaiser
    Something I don't think anyone has mentioned - have you tried beans from a different supplier? Some suppliers roast darker, which with a tight pour like you mention may well become bitter.But as I home roast, I now roast lighter as a rule - which almost never becomes bitter (but can become sour!) Maybe you could try a bag of SO from beanbay?

    PS Agree with a few here - if my espresso's are bitter, I tend to coarsen / speed up the shot. And forget the numbers! I've has great 25 sec and 45 sec espressos - but it is very dependent on the roast depth :-)
    Matt

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    • #32
      If you want to upgrade your grinder the Baratza Preciso will get you 95% of the way there. No need to go crazy with some enormous comercial conical grinder

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      • #33
        One thing I can't see mentioned, reduce your pre-infusion, I have mine set at 2 seconds, most people I know with the same machine only use up to 4 seconds, no higher.

        Also don't completely write off either the grinder or machine just on certain comments on here without testing all variables.

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        • #34
          Originally posted by kaiser View Post
          Hi all,
          First coffee comes out at around 11-12 seconds, and total time to fill 2 x 30ml shots is around 35 secs (including the preinfusion of 7 secs). I try and cut the shot when blonding becomes apparent.
          In my opinion, 60 ml is way too much!
          Try exactly what you describe but cut it short about 25 seconds and 25 ml and see how you like the taste.

          Greg

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          • #35
            Thanks for all the advice so far. Well for some reason things seem to have got worse - without me really changing any of the variables so it has me stumped and frustrated. I'm using the double basket in the naked portafilter holder and basically all of my shots are completely gushers with lots of channelling - having to cut the shot at about 12-15 seconds. The pressure only gets to about 5 bar. The puck is wet and muddy and now usually sticks to the shower screen - whereas before they used to by quite dry and firm with no cracks. I thought maybe the grinder had gone out of adjustment so I ground finer to no avail. Then I tried lowering the dose thinking maybe the puck was being compromised on portrafilter locking. No change. Then I tried updosing. No change. Ive tried three different roasters and beans of varying age (3,5,7,10 days).

            Here is a pic of what I was originally getting (from my original opening post)

            Click image for larger version

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            - now all I get is gushing, watery crap.

            I have the shim kit for the Breville grinder but haven't installed it yet as last week it was grinding fine enough to choke the machine with adjustment room to go even finer
            Attached Files

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            • #36
              Originally posted by CafeLotta View Post
              When I upgraded from a Sunbeam EM0480 to a Compak K3T (rebadged as Wega), the main thing I noticed was an improvement in consistency of both grind and in the cup.
              When I upgraded from a Rocky doserless to a Compak K3 Touch the difference was immediate and very positive. I knew a grinder upgrade would make a tangible difference, but I had no idea how big a difference it would actually make.

              -PW

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