A spice grinder is a kitchen tool used to crush and grind spices into finer particles or powders. It can be manual or electric, with manual grinders often featuring a simple twist mechanism, while electric grinders use a motor for quicker results. Common spices ground include peppercorns, cumin seeds, and coriander seeds. Using a spice grinder enhances the flavor of dishes by releasing essential oils from the spices. Freshly ground spices tend to have a more robust taste compared to pre-ground options. Spice grinders are versatile and can also be used for grinding herbs and coffee beans, making them a valuable addition to any kitchen.