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Thread: Finished roast with holes in Beans

  1. #1
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    Finished roast with holes in Beans

    I just finished a batch of beans that i have roasted before in my Behmor 1600+
    After inspecting the beans i noticed quite a few have a hole blown out in the side of them. Forst time i have notcied this and wondered what happened here?
    I usually roast 220 grams on the 400 setting on P1. When first crack appears i select P2 and wait for 2nd crack then do cooling cycle.
    Is this normal as this is my 11th roast and i have not seen this before?
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  2. #2
    Senior Member greenman's Avatar
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    The holes are called divots, are the beans you roasted different to your other batches, lower altitude beans are less dense and absorb heat a lot faster, too much early heat will cause this to happen and also tipping on the end of the beans.
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  3. #3
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    Thanks for your input. I have been experimenting with keeping the first crack going on the same P1 setting from when i initially hear the first bean crack for about 1 minute then Switch it over to the lower P2 setting for the second crack. Reducing the time between P1 and P2 might help alleviate this.

  4. #4
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    I have taken a picture of the final results. I am about to do another batch so we will see how they go.
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  5. #5
    Senior Member greenman's Avatar
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    What bean origin are they???

  6. #6
    Senior Member Jono_Willmer's Avatar
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    P1 is the hottest setting, maybe try P2 or P3

  7. #7
    Senior Member Barry O'Speedwagon's Avatar
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    Seems to be some aversion on behalf of the OP to tell us what beans are being roasted. Without that everything else is pure speculation.
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  8. #8
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    No aversion i just do afternoon/night shift and time is short for commenting.
    Beans were the standard Indian Elephant ones you get you buy the Behmor.
    I will shoot a picture of the second batch i did today that turned out without the divots tomorrow.

  9. #9
    Senior Member Barry O'Speedwagon's Avatar
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    Quote Originally Posted by HA_DA_JA View Post
    No aversion i just do afternoon/night shift and time is short for commenting.
    Beans were the standard Indian Elephant ones you get you buy the Behmor.
    I will shoot a picture of the second batch i did today that turned out without the divots tomorrow.
    ok. It's just fairly useful info for others who are also short of time and trying to help you for free.

    Two possibilities:

    1) Stay with your existing approach, but switch the power down to 25% (hitting P2 button) much earlier (i.e 5 or 6 cracks in to first crack), and pull the roast at the first sign of 2nd crack (and as you get more experience you might be able to anticipate this are pull a few seconds before this starts).

    2) As per 1) and up the payload by about 40g. This will give you a bit more margin for error.

    You could also try a slower initial ramp (e.g. using P3) but shouldn't be necessary on Elephant Hills.
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  10. #10
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    So here are the pics of the second attempt where i did go to P2 a little earlier.t Not quite as darker but no divots. But seemed a more even roast. Shame you have to wait 5 x days before you can tatse it.
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  11. #11
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    Also is P2 reducing the power by 25% from P1 or is P2 only operating on 25% power? Sometimes this stuff confuses me.

  12. #12
    Senior Member Barry O'Speedwagon's Avatar
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    Quote Originally Posted by HA_DA_JA View Post
    Also is P2 reducing the power by 25% from P1 or is P2 only operating on 25% power? Sometimes this stuff confuses me.
    Hitting P2 after starting the roast reduces the power TO 25%. If you wish to reduce power BY 25% (i.e. to 75%) hit P4.

    For your next roast, try dropping the power a little later (but not as late as 1 min after first crack), or dropping the pay load by 20 grams. That should get you a slightly darker roast with out the divots. Your latest roast should taste fine anyway.

  13. #13
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    Awesome info. Wow i did not realise P2 droppped the power to 25%. Cool. Now i will get to experiment a little more with theother P settings. Cheers

  14. #14
    caffeinated lemoo's Avatar
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    Just keep in mind what program you start off with
    Choosing either of P1 - P5 have different present profiles when you start the roast however pressing P1-P5 during the roast manually changes heat output
    P1 - 0%
    P2 - 25%
    P3 - 50%
    P4- 75%
    P5- 100%

  15. #15
    Life-long Learner DesigningByCoffee's Avatar
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    Behmor Coffee Roaster
    Quote Originally Posted by HA_DA_JA View Post
    Shame you have to wait 5 x days before you can taste it.
    Don't believe that ole furphy HA_DA_JA – always try it for yourself and see
    I often sample straight out of the roaster. The biggest disadvantage with this very early tasting with my setup, (less that 24hrs) is there can remain a subtle toasty aroma – but you will certainly get a very clear idea of how your roasting profile responded.
    FWIW I find the best results come from days 3-7, and go downhill after that – but with the way other people snaffle up beans when you least expect it, I've learnt to live with 'cracking into the bag' whenever I need to!'
    Enjoy the journey…
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