Orange zest is the outer, colorful skin of an orange fruit. It contains essential oils that give it a strong, citrusy aroma and flavor. Zest is often used in cooking and baking to enhance dishes, adding a fresh and vibrant taste without the acidity of the juice. To obtain orange zest, the outer layer of the peel is carefully grated or scraped off, avoiding the bitter white pith underneath. It can be used in a variety of recipes, from desserts like cakes and cookies to savory dishes, making it a versatile ingredient in the kitchen.