Italian Meringue Buttercream (Printer-friendly)
Silky-smooth, stable frosting with delicate sweetness, ideal for cakes and cupcakes.
# What you'll need:
→ Sugar Syrup
01 - 1 cup granulated sugar
02 - 1/4 cup water
→ Egg Whites
03 - 4 large egg whites (about 1/2 cup), at room temperature
04 - 1/4 teaspoon cream of tartar (optional, for stability)
05 - 1/4 teaspoon salt
→ Butter
06 - 1 1/2 cups (3 sticks) unsalted butter, at room temperature, cut into cubes
→ Flavoring
07 - 1–2 teaspoons pure vanilla extract
# Method:
01 - Combine granulated sugar and water in a small saucepan. Stir gently to moisten the sugar, then heat over medium heat without stirring until the syrup registers 240°F on a candy thermometer.
02 - While the syrup heats, place egg whites and cream of tartar in a stand mixer bowl. Beat on medium speed until foamy, then add the salt.
03 - Once the syrup reaches 240°F, immediately remove it from the heat. With the mixer running on medium-high speed, slowly pour the hot syrup into the egg whites in a thin, steady stream, directing it away from the whisk.
04 - Increase the mixer speed to high and continue whipping until the meringue holds stiff, glossy peaks and the mixing bowl feels cool to the touch, approximately 10 minutes.
05 - Switch to the paddle attachment. With the mixer on medium speed, add the cubed butter one piece at a time, allowing each addition to fully blend before adding the next. If the mixture appears curdled, keep mixing—it will come together smoothly.
06 - Beat in the vanilla extract and continue mixing until the buttercream is silky and uniform. If too soft, refrigerate briefly and re-whip to restore structure.
07 - Use immediately to frost cakes or cupcakes. Alternatively, transfer to an airtight container for storage.
# Expert Tips:
01 -
- The texture is impossibly silky, almost like whipped cloud filling that holds its shape beautifully on any cake.
- It is far less sweet than American buttercream, letting the real butter and vanilla flavor shine through.
- Once you nail the technique, it becomes the only frosting you will want to use for every celebration.
02 -
- If the buttercream looks curdled or soupy after all the butter is in, do not panic and do not throw it away, just keep beating and it will emulsify.
- The number one reason buttercream breaks is butter that is either too cold or too warm, so aim for that perfect room temperature softness.
03 -
- Separate your eggs while they are cold for cleaner whites, then let the whites sit out for at least thirty minutes before whipping.
- If your buttercream becomes too stiff while frosting a cold cake, warm a metal spatula under hot water, dry it, and use it to smooth the surface for a flawless finish.