I was really enjoying my latest bag of coffee beans yesterday, then all of a sudden today the coffee tasted bitter. I smelled the beans in the bag and the bitter smell knocked my sox off! What could I have done to make this happen?
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Have you had a bag of beans turn bitter all of a sudden?
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Happened to me today!!! OK I am new to home roasting. Bought a Behmor and I had only done 5 roasts of Peru, when I embarked on a trial of KJM Blend.
Turned out OK, but as I pressed cool it went into 2nd crack, so ended up about CS10. Surprisingly day 3 and 4 it was very smooth both black and white. THEN day 5 BANG. Both the smell in the bag AND the taste in the cup became very bitter. Its like it just fell off a cliff!!!
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No, I shouldn't imagine they'd turn that quickly. I was thinking more along the lines of if you store them in the fridge or freezer, but if they're in the pantry, that shouldn't be a problem. The only other thing I can think of is if they're in the pantry next to a heat source or something along those lines. Other than that, it may just be the beans and how they were roasted, as Bennett alluded to below...strange.
PS - how fresh are the beans? I note you say you have a bag clip on them, which sort of indicates to me that they may not be freshly roasted ones that usually come in a valve bag with a zip top.
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My beans were about two weeks old. I buy them direct from the supplier. They come in a bag with a valve, but as the level of beans get lower, I get as much air out as I can, then put the clip below the level of the valve so it is just above the beans. Should I put the clip above the valve?
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Has there been a sudden drop in temperature that might explain it? Cold beans tend to hold onto their flavour and require 'unlocking' producing a sour note that can also seem bitter
But this shouldn't effect the aroma overly - were the beans oily at all and what was the 'roasted on' date
Certain beans can be great at the 2 to 3 week post roast mark - but then turn quite suddenly once they hit 4 weeks post roast
Cheers, ACg
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