Cumin has a very long list of uses and seasons many a dishes to help bring out their full flavor. Stews, soups, vegetables, rice, tempering's and spice mixtures feature cumin seeds. The seed fried in butter brings a whole new flavor to any dish, especially meat like fish and various grills. Couscous, Dutch cheeses like Leyden, breads from France and liqueur like Kummel are flavored using cumin seeds. It is prominent in the preparation of buttermilk too.
Using cumin as a spice increases antioxidant intake, promotes digestion, provides iron, may improve blood sugar control and may reduce food-borne illnesses. Taking higher doses in supplement form has been linked to weight loss and improved blood cholesterol, though more research is needed.