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How to dose small quantities from a dosing grinder?

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  • How to dose small quantities from a dosing grinder?

    Hey guys,


    Does anyone have any advice for using a dosing grinder (Mazzer SJ/Robur, can't recall which) in a relatively low-volume commercial setting?


    I've been using one at a local cafe and I'm finding it hard to efficiently grind/dose a single coffee.


    Is it just a matter of grinding enough coffee to cover the rotor and leaving it to sit between shots? I've tried the whole turn-on/rack-rack-rack/turn-off thing you see pros doing but all that seems to result in for me is moving the coffee around one full revolution before the segments of the rotor with coffee in them hit the exit chute...

  • #2
    funny enough I was just watching Scotty callaghan instruction video for the Rocket Giotto and his method was dose, dose, tap down X2, and dose dose till over fill, tap down again then scrap back into the doser... have you try that?

    I think Scotty Callaghan Dosing tool is optional

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    • #3
      I'm just talking about reliably getting output from the dosing chamber without filling it an inch full.

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      • #4
        thats not what I mean... you just let it grind and twack it looks full'ish, tap it to collapse and twack till it over fill, tap it to collapse, and brush off the top thats over fill...

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        • #5
          I mean without filling the doser
          an inch full; not talking about the basket :P

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          • #6
            haha... sounds like we are running in circle...

            this is the video Im talking about... it doesnt look like he fills up the doser before he start twaking it... (at 1:35)

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            • #7
              Oki's on the money

              I use an M4 doser. I just grind enough to fill two segments, thwack it all out into the PF , tap to settle, sweep any excess back into the doser for next round (gasp! You don't chuck that 5g's?!!!).
              You will have to adjust your dose/grind/settle technique to suit (a full to the top doser will obviously pack more down into the segments with all that weight on top) but this isn't an issue really - just a change in technique. And your customers will thank you for it!
              Nothing better than ground-to-order brew ;-)
              Matt

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              • #8
                Thanks for posting theta video Oki.It just helped me set my new grinder that I think I was ready to throw out the window LOL. I was trying to use the timed doser on mine and I just couldn't get it right. Gone back to manual and used this exact method. Three shots later ....ahhhhh gooooood coffee!!

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                • #9
                  Starting with an empty dosing chamber just grind for a few seconds then dose it all.
                  If you don't end up with enough in the basket grind a bit more, if you get too much, next time grind a bit less.
                  After a bit of practise you'll work out how many seconds of grinding you need for one coffee.

                  The thing you have to do is forget about the doser and concentrate on how long you grind (sort of like a timed grinder but you do the counting in your head).

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                  • #10
                    Originally posted by Thundergod View Post
                    Starting with an empty dosing chamber just grind for a few seconds then dose it all.
                    If you don't end up with enough in the basket grind a bit more, if you get too much, next time grind a bit less.
                    After a bit of practise you'll work out how many seconds of grinding you need for one coffee.

                    The thing you have to do is forget about the doser and concentrate on how long you grind (sort of like a timed grinder but you do the counting in your head).
                    Pretty much what I used to do when I had a doser grinder and it worked very well.
                    My dosing chamber would be always empty until I was ready to make a shot.
                    I would grind just enough for my shot and after a bit of grind/eye coordination I just knew this by the size of the heap.
                    Then click, click, click to get it all out.

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                    • #11
                      With my mini mazzer if i fill up the space between the burrs and the hopper slider/stopper/thingo by sliding it out and in again. Let it grind out and then start dosing it out. Once I have a little mound, i give it a firm tap and then use my index finger with a slight bend to swipe off the excess into the doser.

                      Works well for me at work and at home!

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