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Thread: Grinding a dose

  1. #1
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    Grinding a dose

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    I am just wondering what the standard procedure is with grinding beans. Do people fill the hopper and grind what they need and leave the beans in the hopper?
    Or only add the amount required (14grams) and grind this amount only? Using this method allows the use of the freshest beans, but does the grinder require the weight of a hopper full of beans?
    I have a Sunbeam 0480
    Andrew

  2. #2
    Sleep is overrated Thundergod's Avatar
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    Re: Grinding a dose

    I mostly just add what I need to grind.
    I can tell pretty well by eye how much to add to the hopper.

    Occasionally though Ill try add enough to the hopper for maybe a few shots.
    For example today Im using up the remainder of two commercial roasts Ive been drinking this past week.
    One is a blend and the other is a SO Costa Rican.
    Im pre-grind blending them in my hopper because I can and will finish them all today.

    Although I generally keep my beans in the one-way valve bags until I need them, I dont see much difference coming from putting this lot all together in the hopper to use up today.

    Someone with a 0480 will surely come along soon and give you any particular info pertaining to your Sunbeam.

  3. #3
    Senior Member Lovey's Avatar
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    Re: Grinding a dose

    Gday Andrew,
    Thats the great thing about the wonderful world of coffee, there is no standard procedure *:).
    With my Rocky doserless grinder, Id put the 2 and a bit (scientifically measured *;D) scoops into the hopper, then put a tamper on top of the beans to stop them flying around, then grind away. The finger guard had been removed to facilitate this.
    The only thing that stopped me from filling the hopper was the weight of the grinder. At the end of the day Id want to empty the hopper of beans, and old Rocky was a bit heavy to be throwing around the bench top. If the Sunbeam is light, it wouldnt be such a hassle to do it though.
    Hope this helps.

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    Re: Grinding a dose

    I used to grind only a small amount, but we were mucking around with some single origins at TMR a while back and I noticed quite a bit of difference between having a bunch of beans in the hopper and loading up one dose. So now I tend to make sure that I have at least two shots worth in the hopper at one time if possible. This way you dont get beans popcorning around. I havent done any real testing of this, but it seems to be the done thing. Maybe its just another difference between cafes and homes, though.

    It would be interesting to compare this effect across flat and conical burr grinders. Given that conical grinders have a much greater separation between the rough cracking and the fine cutting areas, it might not be a problem.

    Espresso = Speculation. Try out both methods a few times and see what works best for you!

    Cheers,

    Luca

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    Re: Grinding a dose

    leaving beans in the hopper "indefinitely" is fine in fact, if you dont and only throw in enough bneans for your dose, you dont get an even grind. The start and end of what is ground is not ground correctly, however insiginificant the amount of incorrect grind is....u need coffee in there throughout from start to finish for consistency.

    I always chuck in a couple of hundred grams at a time.

    G.

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    Re: Grinding a dose

    Gonzo whilst what you and luca have said would seem logically to be correct, as an auditor Im used to looking for evidence before accepting things.
    Can you back up that statement please with a reference.

    I cant see any discernable difference between the particles, whether or not I grind for just myself or several pours at a session.
    I might have to have a closer look next time.



    Food for thought, quality of grinder may make a difference.


  7. #7
    Super Moderator Javaphile's Avatar
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    Re: Grinding a dose

    Quote Originally Posted by Gonzo_150 link=1164516365/0#4 date=1164541543
    leaving beans in the hopper "indefinitely" is fine in fact,
    I would have to dissagree with that if youre talking more than an hour or two. The beans will go stale at a much faster rate in the hopper than if they were kept sealed in a tightly rolled oneway valve bag.

    if you dont and only throw in enough bneans for your dose, you dont get an even grind. The start and end of what is ground is not ground correctly, however insiginificant the amount of incorrect grind is....u need coffee in there throughout from start to finish for consistency.
    Its quite possible that theres a bit of a difference in the first and last of the grind doing a single basket at a time. A lot of that would depend on the grinder Im sure.

    I have a Mazzer Super Jolly with relatively new blades on which Ive removed the hopper. I weigh out beans for each basket Im going to fill and grind them with a chaep aluminium tamper I got with a machine some time back sitting in the throat of the grinder to keep any stray beans from flying out. Ive never checked for a difference in the fineness and consistancy of the grind through-out the grind cycle so there may well be some variance there, but it appears to be pretty minimal and more importantly it is consistant from batch to batch.

    Once my grinder is dialed in for a particular bean/blend it will churn out the identical batch of grounds time after time, each one yielding the exact same extraction pull after pull.

    Doing it this way also allows for virtually zero wastage while getting a perfectly filled basket every time. The only exception is sometimes with the first couple of grinds when switching to a different bean/blend while dialing in the mass and grind needed for that particular bean/blend. I do 12+ 19-20g pulls a day with only a few grams of waste every couple of weeks.

    Other grinders may well produce a huge and inconsistant grind when doing a 19-20g batch, but for the Mazzer Super Jolly its not an issue.


    Java "Loves his MSJ" phile

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    Re: Grinding a dose



    I have a Sunbeam EM 0480, and I add enough beans in the hopper for about three days, which is 4-6 doubles, then top up for another 3 days worth. To my mind, this is the middle ground, sure, the beans are exposed to the elements, but you get a consistent grind with the weight of the beans on top, and yuo dont have to top up the hopper every time you feel like a coffee....


  9. #9
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    Re: Grinding a dose

    To add a novice question, would grind consistency be less affected by hopper volume with conical burrs over flat? It makes sense to me that beans would go stale pretty quickly in a hopper that obviously allows air into, so could see why too many beans should be avoided for low volume use. I have been lazy and allowed beans to sit in there before so see the advantage but know it has a negative affect on the bean quality at the end of the day. I will now stand back and allow the purists to cast stones ;)

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    Re: Grinding a dose

    Thanks for all the info. Will now load less beans into the hopper. Have always filled it and just used it when needed. X4 coffees a day. You wonder why they make the hopper so big if it is not a good practice to leave the beans in
    there. What would happen to put more in teh hopper than is needed. Grind and then put the beans back into the bean bag? I thought the grinder needed the weight of the beans to help feed it correctly.
    ANyway, thanks for the replies
    Andrew

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    Super Moderator Javaphile's Avatar
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    Re: Grinding a dose

    Quote Originally Posted by vast524 link=1164516365/0#9 date=1164578901
    I thought the grinder needed the weight of the beans to help feed it correctly.
    Some say yay and some say nay. The mass certainly cant hurt the grinding process and may well be beneficial, as long as it doesnt lead to the beans staling before theyre used. Clear as mud? :D ;D


    Java "It all depends..." phile

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    Senior Member Lovey's Avatar
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    Re: Grinding a dose

    Quote Originally Posted by vast524 link=1164516365/0#9 date=1164578901
    Thanks for all the info. * Will now load less beans into the hopper. Have always filled it and just used it when needed. *X4 coffees a day. *You wonder why they make the hopper so big if it is not a good practice to leave the beans in there.
    Its a throwback from commercial grinders, which have a big hopper full of beans to save time during the day in a busy cafe filling it up.
    What would happen to put more in teh hopper than is needed. Grind and then put the beans back into the bean bag? *I thought the grinder needed the weight of the beans to help feed it correctly.
    The grinder would benefit from having a constant weight pushing the beans into the grinding chamber, but there is a limit to how much weight of beans you can have pushing in a downwards motion. Theres a finger guard in the hopper that prevents the full weight of the beans in the hopper pushing downwards. Also, the Sunbeam has a removable hopper with a trapdoor, so when youve finished grinding, its easy to remove the hopper and put the contents back into a sealed bag ready for the next session.
    Anyway, thanks for the replies
    Andrew
    Youre more than welcome *:)

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    Re: Grinding a dose

    My Macap also has the trap door.
    It actually helps me measure.

    If I leave it open, the grinding chamber takes more beans than I need for a double shot, so I cant tell if Ive poured in too many.
    But if I leave it closed, I can measure the right amount (by eye, and I get pretty close) and then release them into the grinder.

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    Re: Grinding a dose

    I have the 0480, and I sometimes put enough beans in it for 2-3 shots, and sometimes just for one shot. I know the manual says to keep the hopper full, but the finger guard negates the effect of any beans higher than that, and also seriously reduces the popcorn effect you can get when the hopper is low. If Im working then Ill put the beans in shot by shot, using a very scientific handful as a measure..... If Im at home then Ill put enough beans in for a few shots, knowing theyll be drunk. I have at times had the hopper half full, and can honestly not pick a difference either in the grind or in the shot.

  15. #15
    Senior Member julsajet's Avatar
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    Re: Grinding a dose

    Mine seems to like at least 2 shots worth of beans in the grinder. If only put one in then it popcorns away.

    Seeing as I usually use 2 shots this is no problem.;)

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    Senior Member robusto's Avatar
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    Re: Grinding a dose

    My Iberital has an adjustable timer. It works well and that is my chief means of dosing.

    The ideal is to put in just over 20 grams (double shot) of beans so a few are left over. The reason? If you put less in the hopper, the last few do a merry dance up and down, while the time is timing away but nothing is getting ground. That then produces an incorrect dose.

    Going overboard and having too many beans in the hoper simply allows them to go stale.

    Robusto



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