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Same amount, same tamp pressure, but not the same results - Page 4

Beginner or pro barista, all are invited to share.

Link to "Same amount, same tamp pressure, but not the same results"by malachi on Tue Apr 07, 2009 11:33 am

misterdoggy wrote:I need to find a yogurt cup that it slightly conical in shape. This morning I tried with a cut out cup. I stirred with a wooden skewer (kind that you put on the Barbie) I was surprised to see how many clumps there were and thought if I was to buy the Grinder all over, I would pick a doser to avoid clumping.

I thought I was so clever buying the M4D avoiding cleaning the doser unit with old grains and clicking coffee grinds that inevitably fall all over the place. Grind and have the grains fall directly in to the portafilter what could be easier. Hmmm, now I have to stir.

Well the result was interesting and will now take another adapt as the stirring makes the grains finer and less volumetric in the basket and a bit more "fluffy" I found myself having difficulty keeping the 3 turns at the end to lock in the tamp a difficult thing to keep "level". That the grains can get soft and too mushy, not solid like before, packed if you know what I mean.

The coffee came out much stronger, darker and the taste was slightly more bitter which leads me to think I over tamped trying to adapt to the finer grains due to the stirring.

also note* that because the cutout cup was straight (vertical) when I lifted it out of the basket, it left a ring around, a space so to speak which I had to push the grains into, to fill up and wonder how this played in the whole obsessive path. :)


How are you addressing dose consistency?
"Taste is the only morality." -- John Ruskin
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Link to "Same amount, same tamp pressure, but not the same results"by malachi on Tue Apr 07, 2009 11:34 am

timo888 wrote:At roughly what age have you found this transition to occur, typically? In the first week? After week 1? After week 2? Is depth-of-roast implicated?


My experience is that it depends on the coffee.
All coffees seem to have that moment where they start to degrade significantly. That's the point where some coffees seem to respond well to changing to a coarser grind and higher dose.
"Taste is the only morality." -- John Ruskin
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Link to "Same amount, same tamp pressure, but not the same results"by misterdoggy on Tue Apr 07, 2009 1:27 pm

malachi wrote:How are you addressing dose consistency?


Well Chris, I weighed an amount that was close to 17g (slightly less) and then set the timer on the Macap to 7.8 seconds to see it fill to about the rim. If the coffee changes I will see either more or less coffee depending on the coarseness of the grind and then adjust the Macap timer to a 0.1 second more or less to have the same volume.

Twirling the needle in the basket lessens the volume of the grinds.

so I am close on Volume/weight and exact on pressure with the Acaso 30lbs then tap 3 twirls of the fixed tamper to solidify and then off to the E61 Grouphead.

I returned to the single portafilter for the moment, but will revisit the naked portafilter when I am more confident.

note* I am nervous about the naked portafilter after my experience with it spritzing all over the place. What a mess :(
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Link to "Same amount, same tamp pressure, but not the same results"by cafeIKE on Tue Apr 07, 2009 1:35 pm

DON'T TAP :!:
It can fracture the puck.

Twirling is for ballerinas :roll:
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Link to "Same amount, same tamp pressure, but not the same results"by cannonfodder on Tue Apr 07, 2009 9:06 pm

Grind, dose, level, tamp, wipe off stray grounds on the top of the basket and portafilter lugs and lock it in. That is all that is needed, or grind, dose, WDT, level.... whichever your machine prefers but make sure that your dose is +/- 0.2 grams, preferably less if possible. Dont make the process too complicated.
Dave Stephens
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Link to "Same amount, same tamp pressure, but not the same results"by misterdoggy on Thu Apr 09, 2009 12:05 pm

I have been practicing with a naked poratfilter and am almost there but just need a little help

same amount grind is good
yogurt cup stir (larger needle still bbq skewer)
same tamp pressure

Preheat E61 Flush
pull and .....

get nice tiger strip flow of coffee maybe a little fast but nice and

a spritz at a strange angle here and there. Not like all the time before but a spritz right then
left and then not at all so I am getting close

the spritz is messy as it spritzes on the machine and on you.... its just momentary and fast but still there

almost like its out of character for everything else that is taking place in such good order

any ideas ???
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Link to "Same amount, same tamp pressure, but not the same results"by michaelbenis on Thu Apr 09, 2009 12:57 pm

malachi wrote:And thousands and thousands of people said the same thing about reading entrails.


It took a lot of guts to write that! :mrgreen:

Sorry, couldn't resist!
LMWDP No. 237
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