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Bean comparison

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I’m looking at my current batch of decaf (sugarcane process) beans side by side with normal beans and note that they are darker and oilier. Can anyone help me to understand the oily sheen on the beans: is this a feature of the beans themselves (I presume perhaps in small part), the decaf process (my guess is perhaps in even smaller part), or a feature of the darker roast (my guess is that this is the main factor)? This may in fact not be very interesting but I ask in case it is.





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Decaf beans are generally a fair bit darker in colour due to the decaf process.

Roast is definitely a factor here though. As beans go further in the roast the bean starts to break down and the oils are drawn to the surface.

It has likely been roasted up to or past 2nd crack. Certainly not the darkest roast you will see however.


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