coffee from roast is shiny and greasy, that means something's wrong?

it's normal for a certain level roast, not a broken coffee mark. The oil that came out was natural lipid from inside the coffee beans which migrated to the surface of the cell time inside broken bean due to heat and CO2 building-up. The darker roast, the more oil comes.

untuk light sampai medium roast, biji harusnya relative kering permukaannya. kalau light roast sudah berminyak banget, itu bisa indikasi over-roast atau development yang terlalu lama. untuk medium-dark ke dark, berminyak itu expected dan normal.

one thing to pay attention to: the oily seeds are faster still. the lipid exposed to the air could oxidize and so the range is faster than a drier seed. so the stunt needs to be more careful.

so shiny it's not always bad huh? I always thought it was overoast. Turns out it depends on the roast target