So now you realize why the oils leak out and make some beans shiny. However does it imply something? Effectively, for starters, you are unlikely to see this shininess on lighter roasted beans, based on El Molino Espresso, as a result of it evaporates so shortly in an oxygen-rich atmosphere. The oiliness is slower to evaporate in dark-roasted beans; certainly, it can not accomplish that as soon as they’re packaged with an hermetic seal, which is why some dark-roasted beans can stay oily till the second you open the bag in your kitchen.
That being stated, you need to undoubtedly watch out and keep away from shiny beans when grinding, since as Espresso Affection observes, they will find yourself clogging your grinder. That is the problematic half, since per Espresso Beans 101, shiny beans go away a greasy residue that may have an effect on the grinder long-term. So, how do you keep away from eventual clogging and different points? In the event you just like the style of dark-roasted coffees and like them to lighter roasts the place shiny beans aren’t a difficulty, then that you must be far more cognizant, each with eradicating shiny beans, and the common care and cleansing of your grinder.