Citrus zest is the colorful outer peel of citrus fruits like lemons, limes, oranges, and grapefruits. It contains essential oils that give these fruits their bright, tangy aroma and flavor. When you grate or peel the zest, you release these oils, making it a popular ingredient in cooking and baking. It adds a burst of freshness to dishes, enhancing both sweet and savory recipes. Using citrus zest is simple and can elevate your meals. Just be sure to wash the fruit thoroughly before zesting to remove any pesticides. A little zest can go a long way, making your dishes more vibrant and flavorful!