Announcement

Collapse
No announcement yet.

Its the Cooler for you Herr Grendel - Phase II

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Presso
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Thanks Mal,
    Ive cupped a sample of each of the beans.
    On the whole a much more complex set of characteristics are being exhibited by the same beans Id done in the popper.
    More Later....

    Leave a comment:


  • Dimal
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Originally posted by Presso link=1158477247/45#49 date=1159054282
    Ill check the timing Java, 2-3 min sounds a little quick but I defer to your experience.
    Hi Presso,

    As Java says, 2-3 minutes is the bare minimum time lag between the end of 1st Crack and the start of 2nd. Theres not much point in having a roasting method with a lot of control if you are going to cramp the key roast period into such a short time. Generally, with my previous popper (using a Corretto BM Roaster now 8-)), Id aim for 1st Crack to start in the region of 5-6 minutes after commencing the roast.... After 1st Crack ceases, Id ease the heat off a little (using a very technical piece of old seasoned hardwood fence paling to throttle the popper exhaust) and coast the roast out to the first snaps of 2nd Crack by about the 12 minute mark. If I was roasting some really hard beans, then Id probably allow the roast to progress further into about the 30-60 seconds of Rolling 2nd. Its all done by feel I guess, taking stock of the appearance of the beans, the colour, the aroma, smoke if any and of course the time progression.

    With the new Corretto Roaster in action, 1st crack starts at around 12-14 minutes and 2nd starts at about 17-18 minutes, with Rolling 2nd about a minute after that. Ive only allowed that to happen with one bean so far, some really hard little Yemen beasties that seem to need a lot more seeing to than others. Great in the cup after though.....Bliss :P,

    Mal.

    Leave a comment:


  • Javaphile
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Originally posted by Presso link=1158477247/45#49 date=1159054282
    Ill check the timing Java, 2-3 min sounds a little quick but I defer to your experience.
    Here is a shot of the finished Ugandan Mt Elgon after the extended inter crack phase roast, yet to cup but Ill post after I do
    2-3 minutes is the mininum time. Extending the period out beyond that then becomes a matter of bean/personal choice and what the roaster is physically capable of.

    Java "Roast you little golden beauties, roast!" phile

    Leave a comment:


  • Presso
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Ill check the timing Java, 2-3 min sounds a little quick but I defer to your experience.
    Here is a shot of the finished Ugandan Mt Elgon after the extended inter crack phase roast, yet to cup but Ill post after I do

    Leave a comment:


  • Presso
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    I started with all burners on full, then tried to keep the temp down in between cracks

    1st crack at 4 min
    2nd crack 8 min later!

    Leave a comment:


  • Presso
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Whoops, I mis interpreted the sketch then!
    I just blasted off two new roasts to test the extended inter crack phase

    1st crack at the 4 minute mark
    Second 9 min later!

    Leave a comment:


  • Javaphile
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Originally posted by Presso link=1158477247/45#45 date=1159044884
    Thanks for that Mal,
    I gather you dont want to let the roast go beyond 20min total so if I wind the heat back to make the time distance between the two cracks I could be on the money.
    Ideally you want a minimum of 2-3 minutes between first crack and the end of the roast. It is during this period that the flavors of the beans are developed and if it is rushed the flavors do not have time to develop properly.

    Java "Love those flavors!" phile

    Leave a comment:


  • Presso
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Thanks for that Mal,
    I gather you dont want to let the roast go beyond 20min total so if I wind the heat back to make the time distance between the two cracks I could be on the money.

    Leave a comment:


  • Dimal
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Hi Guys,

    Dont know if this will help you much, but Ive drawn a freehand sketch of a generic roast profile (not to scale) that roasters would normally try to aim for. As you can see, the general trend is for 1st Crack to be achieved relatively quickly and once that milestone is reached, the heat is backed off a mite and the roast allowed to kind of coast up towards 2nd Crack or where 2nd Crack would occur if the roast was allowed to go that long.

    Not sure where Ive seen images of actual roast profiles but I guess if you do a search on google, some will turn up. Hope this is of some help,

    Mal.

    Leave a comment:


  • grendel
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Instead of using my bling for the chimney I used my old golden circle can - that has a small gap between the body of the popper and the can - probe went right down there. Im thinking of drilling a hole in my bling as a permenant probe point.

    Leave a comment:


  • Presso
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    The probe didnt actually make contact with the beans, it is highlighted here by the red arrow.
    Where did you stick your probe?


    Leave a comment:


  • Presso
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    My probe was threaded through the axis on the rotisserie

    Leave a comment:


  • Presso
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    The batch came out fairly even, I still have distribution issues, my vanes have made it better but with something like the Mandheling, I get a real patchy batch.

    Leave a comment:


  • Presso
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Right click on the series, OK that will happen next,
    For now, here is the Decaf profile, Id like to have more temp control but it was a bit windy yesterday.
    First crack at 520 Sec
    Second at 800 sec.
    It would be great to get some feedback about real "profiles", which temp is crucial etc. I know from my glass annealing you can save a considerable about of energy and time by heating/cooling within very narrow ranges if you know the composition of your stock.


    Leave a comment:


  • grendel
    replied
    Re: Its the Cooler for you Herr Grendel - Phase I

    Ahhhh the sexy data is all in the excel charting technique - girls love it. errr ok, maybe not - if you right click on the data series (pink line) you can format it however you like.

    Very nice keeping it going that long. Im working on further ways to slow mine without prying open the popper.

    The really good news is that on monday I am getting a Breville crazy popper in exchange for 500g of roasted beans, and a Bread machine (missing a pan and blade - but its a start) for free from a colleague at work.

    Roasting bloody heaven!

    Now, for my beans - these are the brazil beans - I like to use them for practice and experiements because they are regular in size and stable to roast.

    Leave a comment:

Working...
X