Royal icing, with its origins tracing back to European royal banquets, is a glossy and versatile icing used to decorate cookies, create intricate piping work, and build gingerbread houses. Unlike buttercream or glaze, royal icing dries to a hard, smooth finish, making it ideal for elaborate designs. This recipe is a clean and elegant base that can be customized with colors or flavors, making it not only traditional but a staple in modern-day baking artistry.
4cupsconfectioners' sugarsifted; use pure cane sugar for best texture
3largeegg, whitesor use pasteurized egg whites from a carton if concerned about raw eggs
½teaspoonfresh lemon juiceadds brightness and stabilizes the icing
1teaspoonvanilla extractpure extract recommended
Instructions
In a clean, dry mixing bowl, combine the egg whites and lemon juice. Using a stand mixer with a whisk attachment or a hand mixer, beat on medium speed until the mixture is frothy and light, about 30–60 seconds.
Add the sifted confectioners' sugar one cup at a time while mixing on low speed to prevent it from puffing up. Once all the sugar is added, increase the speed to medium-high and beat until stiff, glossy peaks form, about 4–5 minutes. The icing should hold its shape well and have a pearly sheen.
Mix in the vanilla extract until just combined. If needed, adjust the consistency by adding a few drops of water to thin for flood icing, or a bit more confectioners' sugar to thicken for piping work.
Use immediately or store in an airtight container. If storing, place a piece of plastic wrap directly on the surface of the icing to prevent crusting. Stir well before using again.
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Notes
For a vegan version, substitute 3 tablespoons of aquafaba (liquid from canned chickpeas) for each egg white.
To create colored icing, divide the batch and mix in gel food coloring—avoid liquid food coloring, as it can thin out the icing.
Wrap unused piping bags with a damp paper towel and plastic wrap to prevent the tips from hardening.