Cool Grind ProGrinding fresh whole bean coffee immediately before brewing is the first step to achieving the best tasting coffee at home. Ground coffee interacts with the air around it and, within hours, loses a great deal of flavor and aroma. The longer the ground coffee is exposed to air the more flavor is lost and the rich, full bodied taste of the coffee cannot be obtained. The Cool Grind PRO Blade Coffee Grinder is also ideal for processing herbs and spices