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Found stones in my bag of beans

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  • Found stones in my bag of beans

    I've been sieving my beans to remove any chaff before I bag and freeze. I mainly do it to make preparing coffee that little bit nicer. Excessive chaff seems to mess up my extraction or just cling to things and get messy.

    This was what I was left with from sieving about 200g of coffee. There's not much chaff from this coffee, a few broken beans and a couple of stones!

    Click image for larger version

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    Here's a close up of the stones next to a broken coffee bean as reference.

    Click image for larger version

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    I've been grinding my own beans for years and have never had a problem. I've heard of people finding stones in their coffee before but it sounded too rare to worry about. To get two stones from a single 1kg bag of coffee was incredible. I'm not sure what damage this would have done to the grinder but I'm happy not to find out. It's safe to say that I will be continuing to sieve my coffee.

    Has anyone else found foreign debris in their coffee? Does anyone else sieve?

  • #2
    Yes and yes as I cool my beans in a coarse/fine gold fossicking set

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    • #3
      There's quite a few posts/threads on this topic around the site. Quick searches for stone and stones limiting the search to the title only and limiting returns to Topics (Threads) only will return 14 threads between the two with this one being the main one.


      Java "All kinds of stuff comes free with green coffee!" phile
      Toys! I must have new toys!!!

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      • #4
        My jar of "foreigners" found after roasting. If you supply coffee to anyone else, family, friends etc, you need to ensure it is foreign-object free before you wreck someone else's grinder. If they are paying you for coffee, then you are going to possibly be liable for the damage.

        My home-made de-stoner saves the day regularly.

        GrahamK
        Attached Files
        Last edited by GrahamK; 17 June 2022, 02:50 PM. Reason: Spelling

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        • tompoland
          tompoland commented
          Editing a comment
          Would like a pic of your Destoner if possible. If you can do that for me then I will return the favor and send you a pic of my Stoner (Grandson) - fair swap?

        • Dimal
          Dimal commented
          Editing a comment
          Try here Tom...
          https://coffeesnobs.com.au/special/albums/823225-
          Matt is one of our cleverer inventors of very useful coffee gadgets.

      • #5
        That's quite a collection you have there GrahamK. I tried taking a magnet to the two that I just found and interestingly only one of them was picked up by the magnet. Maybe I'll do a combination of magnet and sieve to cover all bases.

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        • #6
          Here's what I use Mono

          Click image for larger version  Name:	IMG_7051.jpg Views:	0 Size:	340.1 ** ID:	917230 Click image for larger version  Name:	IMG_7048.jpg Views:	0 Size:	313.8 ** ID:	917231

          It was labelled as a garden riddle on eBay. It had 6mm holes which was what I was looking for. Got it for less than $20 plus shipping so I'm pretty happy with the investment right now.

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          • tompoland
            tompoland commented
            Editing a comment
            Love it. Easy as. Ordered!

          • Whorl
            Whorl commented
            Editing a comment
            Yeah, it's looking like i might want to order up one of these too.

        • #7
          "Would like a pic of your Destoner if possible."

          3 pics of my destoner, it's the current iteration
          Attached Files

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          • tompoland
            tompoland commented
            Editing a comment
            Very clever. Available on Etsy? :-)

          • Levered
            Levered commented
            Editing a comment
            Now that's impressive. Very tidy and love the fact that you went through the trouble of cable managing.

        • #8
          There certainly are some very clever people here at CS...

          Mal.

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