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Thread: Roasting Monsooned Malabar

  1. #1
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    Roasting Monsooned Malabar

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    The batch of MM from the october bean bay has been driving me nuts..

    FC happens 10c hoter than all the other beans, And I am not sure if I miss SC because it creeps in during RFC or if it happens way hotter (further than I have roasted).
    All the batches I have done of this bean taste over roasted so i am fairly sure SC is occurring during FC.

    Has anyone else found this with mm?

    David

  2. #2
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    Re: Roasting Monsooned Malabar

    Sounds like my roasts of MM first becomes second etc. To slow it a little I had been opening the bean chute for about 20 seconds as first crack on the last couple of roasts to loose a little heat and slow the roast. Very different to any other beans I have roasted so far.

    Finish for me has been by colour on the last two more so than by sound so far my first one was oily and dark still worked out OK. Second one was stopped on Temp and was nice in a Syphon (little underdone) The current one and the one before are CS9ish and has a little oil spotting on it after 10 days and is very Yummy :)

  3. #3
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    Re: Roasting Monsooned Malabar

    I find I reduce the heat (on the HT model B) just before the start of FC.... and allow the exothermic beans to continue adding heat...... (with other beans I reduce the heat later).

    Also I apply less heat after FC so they coast towards second..... and have no problems separating FC and SC.

    When I was experimenting with PID control of the HT, I found a steady linear ramp to FC and then a much slower ramp after FC gave the best results.....

    MM is a bean which doesnt want to be rushed..... a 22minute overall roast time I found gave best results.

  4. #4
    Senior Member greenman's Avatar
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    Re: Roasting Monsooned Malabar

    I love MM and have done plenty of roasts now, initially JavaB gave me a heads up on roasting these beans, he quoted "you will either love them or hate them" I love them.
    On his advice I take the roasts out and go easy on the temp and ramp it gradually to first crack then ease back on the heat and stretch it out to second crack. All of my roasts have been very pleasing and I thank Robin for this initial advice.
    I always wait a minimum of 14 days before using them.

  5. #5
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    Re: Roasting Monsooned Malabar

    Thanks guys, So it sounds like I was missing SC because it was hidden with FC..

    I roast with a DMM in the beans. I do always back off dramatically just before predicted FC (always 192-195c - except mm). I think my problem with mm is that because FC happens 10c later(205c) by the time my roast slows nicely I am already at SC temp, and then i wait a bit more because i did not realize it was SC - thus over roasting

    My next roast I will back off early as if i was roasting anything else, and drop at normal temp (20c later).

    Thanks

    David

  6. #6
    Senior Member GregWormald's Avatar
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    Re: Roasting Monsooned Malabar

    Ive roasted in the Gene Cafe, and have to use the same volume of beans as others--rather than the same weight--or the roast just runs away.

    I also find it roasts very quickly, and the set temp needs to dropped radically at first crack. Im still trying to get this right. I am also going to try a slower ramp up in the temp and suspect that a set temp of 10C lower than my standard is going to be about right.

    I did manage to separate 1st and 2nd on the last roast--although there was only 1.5 minutes between the end of 1st and the start of 2nd. It also went fairly dark--CS 10+.

    It was still one of the best coffees Ive had.

    Greg

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    Re: Roasting Monsooned Malabar

    Quote Originally Posted by GregWormald link=1231504109/0#5 date=1231546593
    Ive roasted in the Gene Cafe, and have to use the same volume of beans as others--rather than the same weight--or the roast just runs away.

    I also find it roasts very quickly, and the set temp needs to dropped radically at first crack. Im still trying to get this right. I am also going to try a slower ramp up in the temp and suspect that a set temp of 10C lower than my standard is going to be about right.

    I did manage to separate 1st and 2nd on the last roast--although there was only 1.5 minutes between the end of 1st and the start of 2nd. It also went fairly dark--CS 10+.

    It was still one of the best coffees Ive had.

    Greg
    So what weight did you end up and at what temps on the Gene? Im not far off starting with my MM and it may save some tears ...

  8. #8
    Senior Member GregWormald's Avatar
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    Re: Roasting Monsooned Malabar

    In the end I used volume. I measured out 300gm of a non-monsoon and then used that volume of the MM. It worked out to 225gm.

    I doubt the GC thermostats are all the same, but heres what I did--
    Set GC for 20 min and 230C.
    1st crack at 10.5 min remaining--reduced thermo to 220.
    1st crack finished at 8 remaining.
    2nd began at 6.5 remaining.
    Regular snaps at 5.8 remaining.
    Cool button hit at 5.2 remaining (based on colour).
    Beans came out at CS 10+.

    Next time Ill try a slower ramp to 1st--say,
    Start at 180, when GC reaches this temp, wait for 1 minute.
    Raise temp to 200, wait 1 minute.
    Raise temp to 220.
    At 1st crack, reduce to 215.

    From the other roasts Ive done this using this ramping the acidity is reduced and the floral flavours are enhanced.

    Im assuming that the roast isnt stalling because the GC measures outlet temp and the beans *should* take a while to catch up.

    If this isnt slow enough (Im aiming for 1st crack at 12-14 minutes from start, and 5-6 minutes 1st-2nd) then my next go will be to raise the temp in 10 increments.

    I hope this helps.

    Greg

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    Re: Roasting Monsooned Malabar

    Behmor Coffee Roaster
    I did a trial roast in my GeneCafe of 150gm in 125gm out

    Preheated machine to 100 then let cool to 60

    From 0 - First Crack (10.5min) 250 then down to 235 until done (15.3minutes-second Crack)

    Light tan colour at 6min, mid tan at 9 min
    First crack 10.2 RFC 10.5, light chocolate at 13 Second Crack at 15.3 for a CS9-10 finish

    Best batch Ive made and have just roasted a 250gm bactch as a follow.



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