Zest, the colorful outer layer of citrus fruit, adds a concentrated burst of citrus flavor and aroma to desserts and sauces, enhancing their overall taste profile.
Zest contains essential oils that are packed with flavor compounds. Unlike the juice, which primarily contributes acidity and sweetness, the zest provides a more complex and aromatic citrus flavor. When added to desserts like cakes, cookies, and custards, zest infuses the entire dish with a bright, fresh citrus note. In sauces, zest can balance richness and add a layer of complexity, complementing other ingredients. The process of zesting releases these oils, making them readily available to impart their flavor. The absence of the bitter white pith (the layer beneath the zest) ensures a clean, pure citrus taste.
When zesting, avoid pressing too hard, as you only want the colored outer layer. The white pith underneath is bitter and will negatively impact the flavor of your dish. Use a microplane zester for the finest zest and the most intense flavor.