A coffee mill is a device used to grind coffee beans into a fine powder, which is essential for brewing coffee. These mills can be manual or electric, with manual versions often featuring a hand crank and electric versions using a motor for convenience. The grind size can vary, affecting the flavor and strength of the coffee. Coffee mills come in various designs, including burr and blade grinders. Burr grinders provide a more consistent grind, while blade grinders are typically less expensive but may produce uneven results. Properly grinding coffee beans enhances the overall taste and aroma of the brewed beverage.