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Different fresh beans, bad looking extraction

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  • Different fresh beans, bad looking extraction

    Hey guys, so I've bought a 200g bag of Ethiopian yirgacheffe from a local Cafe/roaster in my hood which I only bought from because it was the only place open and I was out of beans.

    The basket gets covered in the initial extraction to show a level pour (naked group handle in use) but right after when it's starting to pour, it will have a few holes in the extraction where it won't form a complete extraction. Basket holes are clear, and shower screen is clean. And it wasn't over or under dosed

    Grinder is a few months old and hasn't given a bad pour until these beans, so it's not to blame (and the burrs have been cleaned the other week). I purged a good 10 or so grams to make sure but still happened.

    They were roasted 5 days ago so they're not stale, they seem to be a light roast I assume as the beans and the grounds are a lighter Brown. The espresso tasted good, I wasn't disappointed with it, but just didn't get why the extraction looked awful. Is this caused by some odd beans?


    These are the beans if the size and color inconsistency has anything to do with it.

    Last edited by kyeba; 27 October 2015, 11:46 PM.

  • #2
    These beans are very lightly roasted for manual brewing methods. I'm surprised your espresso brew didn't taste sour, especially with wormholes appearing.

    A bit of a waste brewing these as espresso in my opinion. If you only have the option of a espresso machine, you could go out and buy another bag of single origin beans roasted for espresso and mix these to your taste. Next time you get have to buy local for your espresso, it's safer to stick to the blend roasted for espresso

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    • #3
      I've got manual brew options at home, which I'll put the rest of these aside for. I was able to get some single origin down the road this morning thankfully.

      I was running the temp at 94c if that's why I avoided any sourness.

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      • #4
        Its only an opinion and a thought but I feel beans that are roasted this light will give you uneven extractions. One extraction might be good the next one could be bad. The first thing i see and somewhat dont see from your picture is that on the beans there is still some chaff. I personally found in the past when I have tried roasting this light (which was a years ago and i dont anymore) most beans will still have a high amount of chaff around them. Being in a home environment I never took the extra steps to removing the excess chaff before grinding and extraction. I personally found the more evidence of chaff in the portafilter meant an uneven extraction. Weather or not the chaff acts as a channeling avenue for water i dont know.

        But found it wasnt so much the bean which would cause the uneven extraction but more the roast level i took it too..

        This is only an thought of my own, happy to hear some rebuttal.

        Cheers,

        Chris

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        • #5
          I've never roasted coffee this light for any of the manual brewing options we have here at home....
          To be honest, these really appear quite odd to me and seems like there is more going on than just a light roast...

          Mal.

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          • #6
            Agreed Dimal.

            Is Yirgacheffe coffee usually so uneven in size?

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            • #7
              Some of them look like peaberries. I don't recall seeing variation in size like that in any of the Yirgs I've roasted....they can certainly be a bit mottly, but that sample of beans looks v. strange (and likely not finished first crack in some cases).

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              • #8
                Originally posted by MrJack View Post
                Agreed Dimal.

                Is Yirgacheffe coffee usually so uneven in size?
                Interesting you asked this. Just opened a gift bag of Beloya beans which appear nothing like others I have had.
                Hmmmm...

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                • #9
                  We're roasting Beloya naturals tomorrow and they look one hell of a lot better than that- green and out of the roaster.

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                  • #10
                    Originally posted by Talk_Coffee View Post
                    We're roasting Beloya naturals tomorrow and they look one hell of a lot better than that- green and out of the roaster.
                    Taking into account monitor diferences, my beans are not even remotely the colour of your ad. Really they are the lightest I have seen for ages. The coffee from the Bonavita has been alright, just.

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                    • #11
                      Originally posted by Barry O'Speedwagon View Post
                      I don't recall seeing variation in size like that in any of the Yirgs I've roasted
                      It was the first thing I noticed when I put them in the hopper and thought it was a strange sight considering it wasn't a blend.

                      I guess I'll have to not put myself in the position of running out of beans again, because I'd like to avoid giving that place my money....even though everyone flocks there raving about the coffee.

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                      • #12
                        Rough and ready mobile pic in average light- but ours looks like this
                        Click image for larger version

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                        • #13
                          Good Grief! The ROAST beans I got are that colour.

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                          • #14
                            Originally posted by GreenBeanGenii View Post
                            Good Grief! The ROAST beans I got are that colour.
                            ...in which case, they're roasted to a similar colour as ours are

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                            • #15
                              Originally posted by Talk_Coffee View Post
                              Rough and ready mobile pic in average light- but ours looks like this
                              [ATTACH=CONFIG]10761[/ATTACH]
                              Ah, that's better - By a long, long way....

                              Mal.

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