A forceful rubbing together, as in chewing.
The process of breaking down firm, solid food items such as coffee beans or nuts into smaller, more manageable particles can be achieved using a variety of different kitchen appliances. Common tools utilized for this purpose include food mills, coffee grinders, food processors, and electric blenders. Regardless of the specific appliance used, the process involves grinding the hard food item until it has been reduced to the desired level of coarseness or fineness, at which point it can be used as an ingredient in a wide variety of recipes or enjoyed on its own as a flavorful, nutrient-rich snack.