Italian Meringue Buttercream (Printable)
Silky, stable buttercream whipped from Italian meringue and butter, perfect for cakes and cupcakes.
# What You'll Need:
→ Italian Meringue
01 - 1 cup granulated sugar
02 - 1/4 cup water
03 - 3 large egg whites (about 3.5 oz), room temperature
04 - 1/4 teaspoon cream of tartar (optional, for stability)
→ Buttercream Base
05 - 1 1/2 cups (3 sticks) unsalted butter, room temperature, cubed
06 - 1 teaspoon vanilla extract
07 - Pinch of fine salt
# How To Make:
01 - In a medium saucepan, combine the granulated sugar and water. Heat over medium heat, stirring gently until the sugar has fully dissolved.
02 - Increase the heat to medium-high and cook without stirring until the syrup reaches 244°F on a candy thermometer.
03 - While the syrup heats, place the egg whites and cream of tartar in a stand mixer fitted with a whisk attachment. Beat on medium speed until soft peaks form.
04 - Once the syrup reaches 244°F, reduce the mixer to medium speed and slowly drizzle the hot syrup down the side of the bowl into the whipping egg whites in a steady stream.
05 - Increase the mixer speed to high and whip the meringue until it is glossy, thick, and the mixing bowl feels cool to the touch, approximately 10 minutes.
06 - With the mixer running on medium speed, add the cubed butter one piece at a time, allowing each addition to fully incorporate before adding the next. If the mixture appears curdled, continue beating — it will emulsify and come together.
07 - Add the vanilla extract and a pinch of fine salt. Beat until the buttercream is smooth, creamy, and uniformly fluffy.
08 - Use the buttercream immediately for frosting, or transfer to an airtight container and refrigerate. If refrigerated, bring to room temperature and rewhip before using.
# Expert Tips:
01 -
- The texture is impossibly smooth, almost like satin, and pipes beautifully on anything from a rustic layer cake to delicate cupcakes.
- It is far less sweet than traditional buttercream, letting the actual flavor of your cake shine through instead of overpowering it.
02 -
- If the buttercream looks soupy or separated after all the butter goes in, pop the bowl in the fridge for 10 to 15 minutes then whip it again and it will almost always rescue itself beautifully.
- The most common mistake is adding butter before the meringue has fully cooled, which melts it on contact and creates a runny disaster that is much harder to fix.
03 -
- Weigh your egg whites with a scale rather than counting eggs because white volume varies wildly and precision is the difference between silky and soupy.
- Warm your mixer bowl with hot water and dry it thoroughly before whipping the whites, because even a trace of grease or cold can prevent them from reaching full volume.