Lemon zest is the outer, colorful skin of a lemon, which contains aromatic oils that give it a strong, citrusy flavor. It is often used in cooking and baking to enhance the taste of various dishes, from desserts to savory meals. The zest is typically removed using a zester or a grater, ensuring that only the bright yellow part is taken, as the white pith underneath can be bitter. In addition to its culinary uses, lemon zest is rich in vitamins and antioxidants, making it a healthy addition to recipes. It can be used fresh or dried, and is commonly found in lemon-flavored products, such as candies, drinks, and marinades.