Parsley is the dried leaf of the Petroselinum crispum plant, a member of the carrot and parsley family. It has a very delicate flavor. It can be used to add color and a bit of freshness to a wide variety of light meats and vegetables. It is widely used in Middle Eastern, European, and American cooking. Dried parsley is very light: 1 ounce contains almost 2 cups fresh by volume.