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Thread: Cooling beans on a tray

  1. #1
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    Cooling beans on a tray

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi!

    Well, the breadmaker and heatgun combination is several steps beyond awesome. Much much better than the airpopper and doing just the right size batches for the hopper on my EM0480.

    When it comes to cooling beans, everyone seems to recommend using a metal colander and agitating the beans in there or tipping the beans from colander to colander until they cool. Being lazy, rather than try to cool the beans in a colander, i have begun to tip the beans onto a large serving tray, where it is a simple matter to spread them out on the tray till they are loosely in a single layer across the tray.

    Now cooling in the colander was taking me about 5 or 6 minutes at the very least to get the beans to a "warm" stage.

    On the tray, beans are cool in about 2 minutes and ready to be bagged.

    The tray i use cost me $2 at k-mart and is a very large plastic white serving tray. Initially i was worried that with the heat of the beans it might melt the tray but my worries seem to be unfounded (i do pour the beans from the BM to the colander first, just because it is easier to get from the bread machine into that. Then straight from the colander onto the tray)

    Just thought I would share what I am doing.


  2. #2
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    Re: Cooling beans on a tray

    Sounds a great easy cooling idea. What size tray did you find suitable? I have a couple of large pizza trays that might do the job -- theyre pretty wide -- 37 cm diameter.
    Ive just started making espresso from my first corretto roast and its sensational. Sure beats my old hand-stirring heatgun method!
    Next step will be to find a cheap temperature probe ... just to make perfection a tad more perfect..
    cheers

  3. #3
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    Re: Cooling beans on a tray

    Another way is to use a vacuum cleaner, with the hose connected through a hole in a bucket. Put the collander on top of the bucket and the air is sucked through the beans, cooling them rapidly.

    I use my old 3/4 hp woodworking dust extraction unit, via a 150mm hose (it was sitting around anyway). I forget how many litres of air it can move in a minute, but the beans are cool in 10 seconds 8-)

    Cheers

  4. #4
    Sleep is overrated Thundergod's Avatar
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    Re: Cooling beans on a tray

    Quote Originally Posted by PhilMac link=1216302575/0#2 date=1216381442
    Another way is to use a vacuum cleaner, with the hose connected through a hole in a bucket. Put the collander on top of the bucket and the air is sucked through the beans, cooling them rapidly.

    I use my old 3/4 hp woodworking dust extraction unit, via a 150mm hose (it was sitting around anyway). I forget how many litres of air it can move in a minute, but the beans are cool in 10 seconds 8-)

    Cheers
    Thats exactly what I do.

    Im about to make a slight change though.

    My son found a vacuum cleaner at work they couldnt sell because it had no hoses.
    Hes stripped the motor out of it and were going to build it into another buket so I can do away with using the hose on my existing setup.
    The new one will be more compact and have no hose to trip over.

  5. #5
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    Re: Cooling beans on a tray

    The easiest way I found was just to tip them onto my granite benchtops in the kitchen. Room temperature in less than two minutes....

  6. #6
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    Re: Cooling beans on a tray

    the tray i use is a massive serving tray id be guessing its around 65cm by 40 cm but i will measure it later and let you know. its made of plastic, very cheap. was $2

    i got it at kmart but ive seen it at the reject shop and a few other shops for the same price.

  7. #7
    Mal Dimal's Avatar
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    Re: Cooling beans on a tray

    Quote Originally Posted by Thundergod link=1216302575/0#3 date=1216383239
    Hes stripped the motor out of it and were going to build it into another buket so I can do away with using the hose on my existing setup.
    Pronounced "boo-kay" TG? ;)

    Mal.

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    Re: Cooling beans on a tray

    Quote Originally Posted by kevviek link=1216302575/0#4 date=1216383726
    The easiest way I found was just to tip them onto my granite benchtops in the kitchen. Room temperature in less than two minutes....

    ditto...works very well and the benchtop has a fantastic aroma for the rest of the day :)

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    Re: Cooling beans on a tray

    i have ceasar stone benchtops, but the gf, not being a coffee drinker already gives me dirty looks about the breadmaker, and all assorted paraphenalia

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    Re: Cooling beans on a tray

    I understand (from some roasters) that cooling the beans too quickly can be a problem - something to do with sugar molecules breaking down rather than fixing in the bean.

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    Re: Cooling beans on a tray

    Quote Originally Posted by Thundergod link=1216302575/0#3 date=1216383239
    The new one will be more compact and have no hose to trip over.
    After I have finished the roast, I pull the vacuum hose out and use it to clean up the chaff which is everywhere, including inside the breadmaker. (Does anyone wash their BM?). I have to be careful, as the suction is very powerful and would even pick up the paddle and the DMM!

    Sounds good. Good to have a son handy like that. My son is too interested in skateboarding.

    Cheers

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    Re: Cooling beans on a tray

    Quote Originally Posted by grendel link=1216302575/0#9 date=1216432376
    I understand (from some roasters) that cooling the beans too quickly can be a problem - something to do with sugar molecules breaking down rather than fixing in the bean.
    Interesting, I havent heard that. Most of the reading I have done suggests the faster the better. eg Commercial link removed by Mods

  13. #13
    Senior Member Dennis's Avatar
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    Re: Cooling beans on a tray

    Achieving FC @ 12 minutes, etc. are just base lines, or guides to work from. Dont take them as gospel just because someone says so.

    Heres a quote from Hazels blog regarding Mountain Top Estate Bin 549....

    "I achieve the cup I want (abundant fruit, good body) if I extinguish all heat just before the beans enter second crack, let them come into second, apply a bit more air to cushion the impact and ease the momentum of crackling, stretch it, stretch it…then quickly into the cooling tray. Further shredding of the green is possible by letting the beans languor in their afterglow in the cooling tray for a few seconds before turning on the cooling fan."

    Like roasting, cooling beans to a pre-defined formula will limit your experience of what can be achieved (and what to avoid).

    Sure, start with the accepted norm, but then...experiment! ;)

  14. #14
    Sleep is overrated Thundergod's Avatar
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    Re: Cooling beans on a tray

    Quote Originally Posted by Mal link=1216302575/0#6 date=1216392441
    Quote Originally Posted by Thundergod link=1216302575/0#3 date=1216383239
    Hes stripped the motor out of it and were going to build it into another buket so I can do away with using the hose on my existing setup.
    Pronounced "boo-kay" TG? ;)

    Mal.
    Mal you know Ive said that I come here to relax from the everyday nitpicking I do as an auditor.
    Occasionally I dont check my spelling knowing MOST of you wont pick on me. *;)

    In this case though its spelled correctly as I bought them from Reverse Garbage.
    They were cheap "bukets" not top quality "buckets"; probably made in China.



    Quote Originally Posted by PhilMac link=1216302575/0#10 date=1216443478
    Good to have a son handy like that. My son is too interested in skateboarding.
    Hes 27 years old mate. Way past skateboards.


  15. #15
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    Re: Cooling beans on a tray

    Quote Originally Posted by Thundergod link=1216302575/0#13 date=1216457089
    Occasionally I dont check my spelling knowing MOST of you wont pick on me. *;)
    Just pulling your leg mate, hence the ;)

    Mal.

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    Sleep is overrated Thundergod's Avatar
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    Re: Cooling beans on a tray

    I know, hence my own ;)

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    Mal Dimal's Avatar
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    Re: Cooling beans on a tray

    :P

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    Re: Cooling beans on a tray

    I pour the beans out on to a large stainless steel pizza tray and the little table fan does the rest. Cools in just minutes!

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    Re: Cooling beans on a tray


    Quote Originally Posted by grendel link=1216302575/0#9 date=1216432376
    I understand (from some roasters) that cooling the beans too quickly can be a problem - something to do with sugar molecules breaking down rather than fixing in the bean.
    Hmmm.... Im a little suss on that. I know its not very scientific but for me it has to be at least similar to:

    Take sugar, boil it on the stove, drop it into water -- great toffee and no "break down of sugar molecules".

    I would have thought that the only thing that would break down the sugars is application of heat when they burn away.

  20. #20
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    Re: Cooling beans on a tray

    I am still to be convinced about the speed of the cooling affecting the taste and quality of the roast.

    Having cooled with the colander to colander approach, my exhaust fan in the bucket and letting the Gene run its cycle I cannot taste an appreciable difference.

  21. #21
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    Re: Cooling beans on a tray

    I pour the beans into a stainless steel bowl, then tip them from a stainless colander to a large strainer five or six times, before pouring them onto an aluminium baking tray. In the warm weather I sit the baking tray on a large freezer block but in the cooler weather find that not necessary. They cool to air temp in about 2 or 3 minutes or less. Im only roasting a few grams at a time in a popper (about 60g per roast), therefore its easy to cool them down quickly.

  22. #22
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    Re: Cooling beans on a tray

    I have a metal mesh tray from a paper making kit - once roasted I pour the beans onto this and then place the tray on top of a pedestal fan that is resting horizontal. This works really well as it blows all the chaff of as well as cools the beans evenly and quickly.

  23. #23
    sdg
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    Re: Cooling beans on a tray

    Youre brave -- I thought about doing something like this, but was worried my beans would get blown away!

  24. #24
    Senior Member redzone121's Avatar
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    Re: Cooling beans on a tray

    Have a look at this.

    1cm thick mild steel. 800mm x 800mm.

    With a fan blowing as well 1m30s to cool, its great ! ;)

    CB


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    Re: Cooling beans on a tray

    Redzone, in your cupping notes have you detected any taints of rust in there? ;D

  26. #26
    Senior Member redzone121's Avatar
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    Re: Cooling beans on a tray

    Behmor Coffee Roaster
    ;D ;D ;D

    mmmm......wondered what that was.

    I dont think the camera did it any favours, bit it has had an alcohol wash since then.

    I guess it will wear in like most things :)

    CB



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