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Thread: Weight after roasting

  1. #1
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    Weight after roasting

    Gene Cafe Coffee Roaster $850 - Free Beans Free Freight
    Just interested what the average weight of 1kg of green beans after they have been roasted.

    Cheers

  2. #2
    Senior Member Yelta's Avatar
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    Depends on how dark you take the roast, I usually lose about 16%. This on Google Roasting - The Coffee Wiki

  3. #3
    Senior Member speleomike's Avatar
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    Hiya

    I do 1 kg lots in my Garanti and I lose 10 to 15 % roughly. I used to record the weight loss but I don't bother anymore.

    Mike

  4. #4
    Senior Member Vinitasse's Avatar
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    Quote Originally Posted by speleomike View Post
    Hiya

    I do 1 kg lots in my Garanti and I lose 10 to 15 % roughly. I used to record the weight loss but I don't bother anymore.

    Mike
    10% seems very low to me... unless you're only roasting to the very first hint of 1st crack

  5. #5
    Senior Member GrahamK's Avatar
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    15%-18% depending on the roast depth etc

  6. #6
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    Over the last dozen or so roasts I've done on a behmor, I've had between a 15 and 18 percent weight loss, with an average of 16.2% (These are on roasts that are usually around 300g of greens).

  7. #7
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    I typically roast 300g batches and they're usually ~250g when they come out, so approximately 16%.

  8. #8
    Senior Member speleomike's Avatar
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    Behmor Coffee Roaster
    Hi all

    Exact figures here:

    Ethiopian Limu 1.0 kg to 0.808 kg = 20% loss
    PNG Wahgi 1.065 to 0.885 = 15% loss
    Cuban Altura 1.0 to 0.8 kg = 20% loss
    Indian Monsoon Malabar 1.0 to 0.814 = 19% loss

    So yes Vinitasse is correct, sorry about my 10%, it's too low. I looked back over my notes so it looks like 15% to 20% is normal. I take my beans to just the start of SC.

    Mike



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