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Thread: Newbie trying home roasting

  1. #1
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    Newbie trying home roasting

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hello everyone,

    As a newbies we hope someone can shed some light on this story. By the way we have tried to understand the language used in these forums with some difficulty; Im hoping perseverance will give clarity.

    We recently equipped ourselves with an Expobar office machine and an I Roast II roaster. A good grinder is next on the list as were using a cheapie that grinds OK but not not all that well. We recently (yesterday in fact) roasted some Ethiopian Gambella Naturals (from the newbies pack) in the I Roast. We have read in the forums about 1st & 2nd cracks and that the general consensus seems to be about 15 - 25 minutes to achieve this level of roast. Well the I Roast only took 7.5 minutes to achieve a CS8 (from the card) and because of the noise of the machine we would have no hope of hearing any cracks if thats what this means.

    Anyway, after resting overnight we ground the beans and drank it in a rather milky (latte style) state which tasted chocolaty and mild, then we tried it as a shot and it had a slight burned taste.

    We are real innocents to this game, but are aware that tamping, brewing, cleanliness of equipment, bean selection, water filtration and temperature etc. all have an impact on the final product.

    Our problem is no benchmark. If anyone can direct us to some early reading to begin the learning process, we would appreciate it.

    Paul *

  2. #2
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    Re: Newbie trying home roasting

    I roast is a different beast to the larger roasters and from my limited knowledge of short roast times are normal. I would recommend doing some roaster specific research/googling on tips techniques and profiles for this roaster.

    If you want a benchmark for your own roasting buy some good professionally roasted beans. There is no substitute for your own senses.

    If you want a benchmark for your brewing and your unsure on how your shots stack up then go and visit a recommended cafe from the "good coffee where?" section. Just be aware that its very difficult to replicate the shots made with a Robur and Synesso on home equipment even using the same beans. Never mind though it will give you an idea of what espresso should taste like, your coffee may be closer to the mark then you think.

  3. #3
    Member Jaso's Avatar
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    Re: Newbie trying home roasting

    He raises a point I havent yet completed a search on these forums for though and that is my inability to be able to hear any crack (first or second) during my Breadmaker roasting so I am literally following what I believe to be a suitable temperature profile and look of the bean itself.

    The agitation of the beans in the machine is just too loud to be able to hear any change in the beans so for me my question is; how important in the roasting process is it to hear the first and second cracks and how much am I disadvantaging myself by not being able to?

  4. #4
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    Re: Newbie trying home roasting

    Its pretty important. Second crack is a pretty consistent indication of roast depth, Its an easy ballpark point to go to when you roast beans for the first time. Color changes from region to region and temperature probes can vary based on roaster differences and batch size.

    With practice second crack can be identified by an increase in smoke and the smell of the smoke changing to a slightly burnt toffee whiff.
    The bean surface will also usually become much more consistent in color just before second crack. Any sign of oil is a good indication to pull the roast immediately.

  5. #5
    Sleep is overrated Thundergod's Avatar
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    Re: Newbie trying home roasting

    Paul I dont know how noisy an I Roast is and Jaso I use a corretto and despite being totally deaf in one ear have no problem hearing first crack.
    What size batches are you doing?

    Paul from what Ive read you should be able to program your I Roast to get a longer roast time. 7.5 minutes is a bit fast. You can achieve that with a standard popper.



  6. #6
    Member Jaso's Avatar
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    Re: Newbie trying home roasting

    Thanks lads. It was just a general enquiry. Thundergod; I roasted 300g 2 nights ago and it was pretty loud. The BB400 model I have appears to have a larger chamber than a lot of the corettos I seen pics of on here. That could account for the fairly rapid speed individual beans are flying about the chamber.

    I think if I increase the volume there will be less individual beans banging the side of the chamber and more of a subdued agitation and hopefully therefore less noise.

    As a newbie to the roasting game Im reluctant to whack in 500g so early in my career but I guess in the name of getting it right I need to accept the fact that Ill be chucking some of my early ones in the bin. My 1st roast is +2 days now so if it tastes terrible tomorrow that is where it will be going.

  7. #7
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    Re: Newbie trying home roasting

    Thanks to all,

    This is very helpful information. We appreciate you guys taking the time to answer - we now have another small learning step.

    regards

    Paul






  8. #8
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    Re: Newbie trying home roasting

    Thanks Thundergod,

    Yes the I Roast can be programmed, however if we increase the time Im concerned we would get incinerated beans. We can also adjust temperature, but we dont know what effect that would have on the result.

    Theres really know way we would hear any cracking over the noise of the machine. We almost need ear muffs due to OH&S.

    Were doing very small batches at present (50-75gms) because we really dont have enough confidence and therefore destroy good beans.

    Regards

    Paul

  9. #9
    Sleep is overrated Thundergod's Avatar
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    Re: Newbie trying home roasting

    @Jaso
    Dont bin it yet.
    Some beans take quite some time to develop a nice flavour.
    Try them again at day 7.

    I dont personally like the Gambella.
    Maybe your taste is similar to mine.

    I was hinting that more beans may change the sound so you got where I was going with that.

    I started with 300g batches and eventually progressed to 600g ones.

    I now find it harder to conrol the smaller batch size as Im now used to the larger one.

    Online pictures seem to me to show that your BB400 is larger than my BM but its not one of the largerst.
    Judging by what pics I can see, 300g would be a relatively small batch.

    ---------

    @Paul
    Lowering the temperature will increase the length of the roast.
    This will mean a longer roast will not be a darker roast.
    The trick is to get the temp and time right.
    Hopefully an I Roast owner can give you some clues as to the temps and times you need as a starting point.

    Where are you?

  10. #10
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    Re: Newbie trying home roasting

    Were in Brisbane Thundergod

    Paul

  11. #11
    Senior Member GregWormald's Avatar
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    Re: Newbie trying home roasting

    A caution about the Gambella--it can take up to 10 days to lose the burnt rubber and develop what I regard as one of the best tastes out there.

    Greg

  12. #12
    Senior Member Koffee_Kosmo's Avatar
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    Re: Newbie trying home roasting

    Quote Originally Posted by 24110604340C110E020F07630 link=1256684836/10#10 date=1256710480
    A caution about the Gambella--it can take up to 10 days to lose the burnt rubber and develop what I regard as one of the best tastes out there.

    Greg
    Yes I agree even 14 days
    I prefer Ethiopian Gambella Naturals over the Ethiopian Yerg

    Quote Originally Posted by 2D0C10160411060510630 link=1256684836/9#9 date=1256709015
    Were in Brisbane Thundergod

    Paul
    You can come to the Brisbane meet up 15 Nov and we will set you on the right path

    KK

  13. #13
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    Re: Newbie trying home roasting

    I also am a fan of the GreenBay Gambella ...... definitely my favourite , so far , ........ for me it seems to hit peak after 8 days rest....

    Come to think of it , I might just roast another batch today ..... :D yeha


  14. #14
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    Re: Newbie trying home roasting

    Quote Originally Posted by 1F2A3D3F0F372A3539343C580 link=1256684836/10#10 date=1256710480
    A caution about the Gambella--it can take up to 10 days to lose the burnt rubber and develop what I regard as one of the best tastes out there.

    Greg
    Quote Originally Posted by 30372C2B30373C580 link=1256684836/12#12 date=1256854793
    definitely my favourite , so far , ........ for me it seems to hit peak after 8 days rest....
    cheers for the info guys, wasnt a fan, wasnt patient enough by the looks of things!.........im going to roast some more tonight! :D

  15. #15
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    Re: Newbie trying home roasting

    Behmor Coffee Roaster
    Hi. *I am also a newbie trying to do home roasting. *I have had my share of problems with regards to roasting like smoky home roasters and also over-roasted and under-roasted coffee beans. *But with much practice, I think I an slowly getting used to it. One of the sites that I have found to be very helpful as a newbie home coffee roaster is oncoffeemakers, as it caters with everything I need about coffee. I also suggest you buying a coffee roaster that is branded rather than a cheap roaster to be able to be sure of a quality coffee roast. *Happy New Year everyone!



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