Foolproof Buttercream Frosting - cooking recipe

Ingredients

6 large egg yolks
3/4 cup sugar
1/2 cup light corn syrup
2 cups unsalted butter, softened
2 tablespoons vanilla (or other flavoring--see not at top of page)

Preparation

In mixer bowl at high speed, beat egg yolks until pale yellow, 4 to 5 minutes.
Butter a 2-cup glass measuring cup (you will need it for the next step--so butter it now).
In a 2- to 3-quart pan, combine sugar and corn syrup.
Cook over medium-high heat and stir until sugar is dissolved and mixture comes to a rolling boil.
Immediately pour into the butter glass measuring cup.
Beating constantly at medium speed, pour syrup in a thin, steady stream into egg yolks (avoiding beaters).
Continue beating until mixture is at room temperature (7 to 10 minutes).
Add butter and vanilla.
Beat just until smooth.