A coffee grinder is a kitchen appliance used to grind coffee beans into a fine powder for brewing. It comes in various types, including:

Blade Grinders: These use a blade to chop the coffee beans. They are affordable but can produce uneven grind sizes.

Burr Grinders: These crush the beans between two abrasive surfaces (burrs) for a more uniform grind. They are preferred by coffee enthusiasts for their consistency and ability to adjust grind size.

Manual Grinders: These require hand-cranking to grind the beans. They are portable, quiet, and often used for small batches.

Electric Grinders: These are powered by electricity and can quickly grind large quantities of beans. They are convenient and often come with adjustable settings for different grind sizes.

Coffee grinders can be used to prepare coffee for various brewing methods, including espresso, drip coffee, French press, and more. The quality and type of grinder can significantly impact the flavor and aroma of the coffee.