Festive Frosting

Combine egg whites, granulated sugar, water, and light corn syrup in a heatproof bowl or the top of a double boiler.

Set the bowl over a pot of simmering water, ensuring the bottom does not touch the water. Whisk the mixture constantly to ensure even heating and prevent curdling.

Continue whisking until the sugar dissolves completely and the mixture reaches 160°F (71°C) on an instant-read thermometer, or until the mixture feels hot to the touch and the sugar granules are no longer gritty.

Remove the bowl from the heat and transfer the mixture to a clean mixing bowl, preferably of a stand mixer.

Beat the mixture on high speed using an electric mixer for 7–10 minutes until stiff, glossy peaks form and the frosting has cooled to room temperature.

Add vanilla extract and beat for an additional 30 seconds until fully incorporated.

Use the frosting immediately to decorate cakes, cupcakes, or cookies.