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Thread: Good Extraction but slushy grind

  1. #1
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    Good Extraction but slushy grind

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi Coffeesnobs, im currently testing out my new Iberital Challenge with my Gaggia Cubika and im finding that im getting a good extraction of around 30mls in 30seconds but im finding that when i remove the group head its very slushy and wet there. I believe that ive filled the group head with enough ground coffee and that ive tamped it enough. Any ideas on what im doing wrong?

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    Re: Good Extraction but slushy grind

    Just a tiny bit coarser mate. If the volume is correct, but youre getting soggy pucks, a slight adjustment coarser with the same tamp etc. will produce dry, firm pucks.

    If youre underdosing, you wouldnt see the shower screen screw imprint.

  3. #3
    Mal Dimal's Avatar
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    Re: Good Extraction but slushy grind

    Can also be related to a slightly low brew water temperature too, so if the grind adjustments dont realise an improvement, you could try doing a bit of "temperature surfing" with the Cubika to raise this up a bit and see how this goes. In this situation, you should notice an enormous improvement in the quality of the shots too.

    Happy brewing and experimenting [smiley=thumbsup.gif]
    Mal.

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    Re: Good Extraction but slushy grind

    cool thanks how do i raise the tempreture on the cubika?

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    Mal Dimal's Avatar
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    Re: Good Extraction but slushy grind

    Gday nicholasm,

    You cant raise the temperature as such, its more a case of pulling the shot in the most ideal part of the Heating Cycle to ensure that your Brew Water Temp is at the optimum for pulling a great shot.

    Im not at all familiar with where this is with respect to Gaggia domestic machines but I am sure that other owners will be glad to post in and identify the best way to do this for your machine. Id imagine it would be similar for all Gaggias as such. Basically, you try to time the point in the heating cycle using the Brew Indicating Lamp which switches On and Off in sync with the Heating Element. Once you know the timing envelope, its just a matter of pulling your shots at the same time in the cycle each time for consistently good quality pours, with all else being equal.

    Cheers mate, other Gaggia owners are bound to pick up on this and help you out.... If not might be a good idea to start a new thread in the Brewing Equipment Category. All the best,

    Mal.

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    Re: Good Extraction but slushy grind

    Could it be a lack of 3 way solenoid valve that is causing the slushy puck? Not sure if the Cubika has a 3 way valve or not...but if it doesnt...Ill bet that the lack of the valve is the problem OR underdosing

  7. #7
    Mal Dimal's Avatar
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    Re: Good Extraction but slushy grind

    You could be right there Wushoes, Im not familiar with the various Gaggia machines and variable specs of each. If the Cubika doesnt have a 3-Way Valve, then thats it basically :-?

    Mal.

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    Re: Good Extraction but slushy grind

    Behmor Brazen - $249 - Free Freight
    I have just done some research and have found out the Gaggia Cubika and Gaggia Coffee do not have 3 way valves.

    nicholasm, that is basically your problem right there. What a 3 way solenoid valve does is release excess backpressure from the brew head. So in essence, releases excess water from the top of the puck, so you can remove the portafilter without fear that it will explode all over your face and house.



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