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Thread: first use of i-roast2 and em6900

  1. #1
    DrT
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    first use of i-roast2 and em6900

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Hi All,

    I think this collection of words is going to cover roasters and brewing equipment so I guess general coffee related might be the best in-between.

    My wife and I opened up our I-Roast2 and EM6900 yesterday and had a go at both.

    We used the second preset on the roaster for a dark roast with brazlian beans from the starter pack. It was about 23 or so degrees and the profile proved to be a bit too aggressive for the conditions at hand so second crack came quick quickly and as a result I hit cool a good few minutes before the profile was meant to finish. The colour is a couple of shades short of light black and pretty much uniform. I must admit the whole procedure happened so quick and the result is wonderful. Mind you, the only problem was the smell of the out-gassing beans. Yuk - enough to make me slightly nauseus. This morning I had a whiff after about 20 hours of degassing and most of the grass smell has gone and its now taking on coffee aroma. I will place the remaining beans into an airtight container later today after grinding a small amount for immediate use. Looking forward to it...

    We also tried the EM6900. The first result was a huge laugh. My wife and I are used to a sub-$100 machine from BigW that absolutely chokes up with a grind setting of 16 on the EM0480 grinder, so when I tried a setting of 20 with a *lot* of coffee tamped down only slightly it basically came out like slightly yellow water and the extraction gauge barely moved!! Cutting a long story short, I ended up using a grind setting of 12, filling the single basket up to the start of the silver section on the supplied tamper, and tamping with a good bit of force - probably more than 30kg worth. The result is very close to what I desire so I guess I am happy with the first days work!

    I did however notice that two variables are very closely connected - the grind and tamping force. These can either see the extraction gauge jump straight into the black and quickly diminish toward the beginning of the yellow zone, or, jump straight into the black and slowly move back to the end of the yellow zone over the same amount of time. Quite obviously this greatly affects the overall taste but I had no idea the machine would be able to produce such a different series of results.

    It seems to me like I could now quit my day job and pursue and another profession - its all so interesting!

    DrT


  2. #2
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    Re: first use of i-roast2 and em6900

    DrT, This is basically how I use mine (Variation do occur depending on the bean etc)..

    OK, this is now I dose on my EM6900, bearing in mind I have the later release version of the product...(after 2 returned faulty units)

    Using the Sunbeam EM0480 (What a awesome grinder!!!), Im using my own roasted Beans (50/50 blend of Indian Mysore Nuggets and Brazil) about 5 days old since roasted.

    Set the grinder at 23-34 (Double basket)
    Do an initial fill to a mountain in PF, lightly tamp to settle the first dose... then dose again creating a "mountain" effect in the PF. Tamp heavily (as prescribed), clean the PF edges.. You should have about 1-2 mil in clearance between the coffee grinds and the rim of the basket.

    Insert into Group (Reasonable tightness) and do the extraction. I achieved an excellent dark brown pour throughout until blonding occurs and then I kill the extraction.

    What I get is a sweet smelling aroma and medium-dark brown crema.

    Puck is just that - A Puck with the shower screen inprint and screw! - Nothing soggy about it at all.

    Hope this can guide your path on using the machine...

    Note: My grind settings appears unusual considering others here are using the grinder at 12-16 setting... I did this but I found the grind was too fine... plus the Sunbeam baskets are larger than normal so a courser grind is nessesary... Let us know how you get on... it is practice and working out the dosing - Grind and Tamp... once you get it right, youll be fine.

    Marc

  3. #3
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    Re: first use of i-roast2 and em6900

    Sounds like youre off to a great start! There are always subtle differences between the way different machines perform and, like you said, there are a helluva lot of variables that you can tweak, so I always like to just stick with one blend when Im using a new machine. Never really get to, though.

    Anyhoo, I bet that it will only take three days before you wondered how you could ever be bothered waiting for steam!

    Cheers,

    Luca

  4. #4
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    Re: first use of i-roast2 and em6900

    Quote Originally Posted by marcstolk link=1158892427/0#1 date=1158898136

    Set the grinder at 23-34 (Double basket)
    Do an initial fill to a mountain in PF, lightly tamp to settle the first dose... then dose again creating a "mountain" effect in the PF. Tamp heavily (as prescribed), clean the PF edges.. You should have about 1-2 mil in clearance between the coffee grinds and the rim of the basket.



    Marc
    Have you seen the thread/ifo on "channeling", tamping and polishing. I have been attempting this technique, very hard to resist the initial tamp and chinking the side of the tampr, the hardest bit for me is avoiding the polish at the end!

  5. #5
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    Re: first use of i-roast2 and em6900

    Behmor Brazen - $249 - Free Freight
    Hey Presso.. I have actually... it was interesting read... Ill be getting one of the PFs nakedised this week and Ill be interested to see if I have channelling or not...



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