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What Pressure for Best Extraction?

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  • What Pressure for Best Extraction?

    Hi all,

    I am a rank newbie to quality coffee machines.

    I have just taken delivery of an Exobar Office EB61 machine - double boiler. I have a Compak K3 grinder.

    The instructions with the Exobar are truly pathetic, but I think I have most of it worked out.

    My concern is what pressure I should be getting to optimise extraction. Obviously I make the grind finer to increase the extraction pressure.

    So far I am only extracting at about 5 bars and this gives a pleasant but gutless brew.

    I guess it's a matter of experimenting until I get what I want from the machine, but some guidelines from the cognoscenti on this forum would be appreciated greatly.

    Thanks.

  • #2
    What beans are you using?

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    • #3
      From Zest coffee in Berwick Victoria.

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      • #4
        Is it fresh roasted within the last 2 weeks?

        Fresh coffee at the right grind from K3 and your machine should be extracting around 8.5 to 9.5 bar.

        Try grinding a lot finer

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        • #5
          Originally posted by Steve82 View Post
          Is it fresh roasted within the last 2 weeks?

          Fresh coffee at the right grind from K3 and your machine should be extracting around 8.5 to 9.5 bar.

          Try grinding a lot finer
          Thanks Steve,

          I live near Zest in Berwick and buy the beans fresh roasted directly from them. So yes, roasted in last 2 weeks.

          Will try the finer grind and will post back.

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          • #6
            Finer grind and careful attention to dosing and now extracting nicely - thanks.

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            • #7
              Work on grind, dose and tamp correctly (search it here on CS) and you won't look back! Enjoy the journey of discovery!!

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