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Thread: Cooling time for Beans ?? / Roast profile ??

  1. #1
    Senior Member redzone121's Avatar
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    Cooling time for Beans ?? / Roast profile ??

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi team, is there a preferred cooling time for beans? I dont have a very good system for this, just dump them is a large wire
    strainer and manually stir in front of a fan. Usually takes about 4-5 minutes to reach room temperature?

    Also my average roasting times with Corretto is 12.20 -13.00mins to first snaps of FC, then I struggle to stretch gap to first snaps of SC to 3 minutes. Once SC starts maybe 30-50 secs to fairly active SC, then 30 - 40 secs before pulling. I do get the roast colour and flavor I prefer (CS 10 ish) but I maybe missing something from short gap between FC and SC?
    I am using many different SOs and blends but getting very similar roast times.

    16.30 to 17.50 mins are my regular roast times, obviously the darker roasts closer to 18mins

    Any help would be awesome 8-)

    CB

  2. #2
    Sleep is overrated Thundergod's Avatar
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    Re: Cooling time for Beans ?? / Roast profile ??

    You have to try stretch the gap to SC a bit more.
    5 - 6 minutes.
    Back of the heat while FC is happening, but keep FC going.
    If you use a thermometer you can make sure that the temp keeps rising towards SC, but it has to rise slowly.
    The temp can race away from you if you arent careful.

    The gap between FC and SC is where the sugars caramelise Ive been told, so that is what youd be mising some of.

  3. #3
    CoffeeSnobs Owner Andy's Avatar
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    Re: Cooling time for Beans ?? / Roast profile ??

    One simple rule with cooling... FASTER THE BETTER.

    In the drum I work on dropping 100C. in a minute and aim to get to 50C in a couple of minutes. *The way I see it there is not much "cooking" happening at 50C so the rest of the time is not as important. *I had to install some serious external fans to get the beans to cool that quick though.

    Commercial roasters work on an ideal of 4 minutes odd so as long as you are under that you are pretty close to the mark.

    Once I was told that a large marble slab or a heavy cast iron bath-tub make perfect cooling "trays" as they have enough cold mass to suck the heat out of the beans on contact.

    ...just make sure the kids are not in the bath when you lob the beans in.

    ;-)


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    Re: Cooling time for Beans ?? / Roast profile ??

    In winter, fast cooling isnt a problem. Ive got a 48V radial fan and roasted beans go into a wire mesh collander and collander on top of the fan. After 2 minutes, the beans are as cold as the 8 degree wind... Until this post, I was wondering if the cooling was happening too fast. A lot quicker this way than having a fan on the side.

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    CoffeeSnobs Owner Andy's Avatar
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    Re: Cooling time for Beans ?? / Roast profile ??


    PS: I agree with Thundergods 5 minutes 1st to 2nd crack as a great starting point.

    Aim for a 3-5 dergee per minute application of heat after the start of 1st crack and it take you close.


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    Senior Member GregWormald's Avatar
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    Re: Cooling time for Beans ?? / Roast profile ??

    The Gene Cafe takes about 4 or 5 minutes to get the temp down to a reasonable level--80 or so--below further cooking.
    Ive tried dumping at the end of the roast and before the cooling cycle but havent noticed any difference in taste, so now I dont bother.
    Of course, YMMV.
    Greg

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    Senior Member redzone121's Avatar
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    Re: Cooling time for Beans ?? / Roast profile ??

    Behmor Coffee Roaster
    Thanks guys, today I raised the level of the H/G and left the lid off.
    Took a bit longer to FC 14mins but I managed to get a 6m 30sec gap between FC & SC
    Total roast time 21.15 ?? is that a bit long ?? and looks like a CS9.

    Beans were Bean Bay El Salvador Mirasol. now the waiting game begins :)

    CB



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