The note of Royal Icing manifests as a crystalline sweetness, sharp yet soft, reminiscent of finely powdered sugar dissolved into a delicate, almost ethereal glaze. It opens with an initial bright, almost aldehydic sparkle, often carrying a subtle hint of lemon zest that quickly mellows into a creamy, vanilla-tinged sweetness. Its texture is smooth and velvety in the olfactory imagination, rather than gritty, suggesting a perfectly set, pristine finish. It has a moderate to strong projection, particularly in its initial burst, settling into a comforting, edible aura. As a note, it typically behaves as a heart note that lingers beautifully into the base, offering impressive longevity. Its evolution is linear, maintaining its core sweet profile while perhaps shedding some of its initial tartness, becoming more purely saccharine and warm over time. There's an underlying powdery quality, not dusty, but like the finest confectioner's sugar, creating a cloud of delightful sweetness.