A coffee grinder is a kitchen appliance used to grind coffee beans into smaller particles, allowing for the extraction of flavor when brewing. There are two main types of grinders: blade grinders and burr grinders. Blade grinders use a rotating blade to chop the beans, while burr grinders crush the beans between two surfaces, providing a more consistent grind size. Using a coffee grinder can enhance the taste of brewed coffee, as freshly ground beans retain more flavor and aroma. Many coffee enthusiasts prefer to grind their beans just before brewing to ensure the best possible cup. Proper grind size is essential for different brewing methods, such as French press, espresso, or drip coffee.