The bowl is deep enough to contain whole spices as they break down, and the pestle's weight does most of the work for you. A practical grinding tool that also looks good left on the counter. Grind whole spices (peppercorns, cumin, coriander, fennel, cardamom), crush garlic and herbs for pesto, make pastes and rubs, break down nuts for granolas and baked goods, prepare guacamole.