Italian Meringue Buttercream (Print Version)

Silky, luxurious frosting whipped from glossy Italian meringue and creamy butter for elegant cakes.

# What You Need:

→ Italian Meringue

01 - 1 cup granulated sugar
02 - 1/4 cup water
03 - 4 large egg whites, room temperature
04 - 1/4 teaspoon cream of tartar (optional)
05 - 1/8 teaspoon fine sea salt

→ Buttercream

06 - 1 1/2 cups (3 sticks) unsalted butter, room temperature, cut into cubes
07 - 1 teaspoon vanilla extract

# Directions:

01 - Combine granulated sugar and water in a small saucepan. Heat over medium heat, gently swirling the pan until the sugar fully dissolves. Attach a candy thermometer and continue heating until the syrup reaches 240°F (115°C).
02 - While the syrup heats, place egg whites, cream of tartar, and fine sea salt in a clean, grease-free stand mixer bowl. Begin whipping on medium speed until soft peaks form.
03 - Once the sugar syrup reaches 240°F (115°C), slowly and carefully drizzle it into the whipping egg whites with the mixer running on medium-high speed. Avoid pouring the syrup directly onto the whisk attachment.
04 - Increase the mixer to high speed and continue whipping until the meringue forms stiff, glossy peaks and the bowl feels completely neutral to the touch, approximately 7 to 10 minutes.
05 - With the mixer running on medium speed, add the cubed room-temperature butter a few pieces at a time, allowing each addition to fully incorporate before adding more. The mixture may appear curdled or soupy midway through — keep mixing and it will emulsify into a silky, smooth buttercream, about 5 minutes.
06 - Pour in the vanilla extract and whip just until evenly combined.
07 - Use immediately to frost cakes or cupcakes. Alternatively, store covered in the refrigerator for up to 5 days — bring to room temperature and re-whip before using.

# Expert Tips:

01 -
  • This buttercream tastes like pure velvet and makes any cake feel like it came from a professional bakery.
  • Once you master the technique, you will never go back to American buttercream again because the difference in texture is undeniable.
02 -
  • That terrifying curdled phase when you are adding butter is completely normal and happens to every single person, so just keep the mixer running and trust the process.
  • Cleaning your bowl and whisk with white vinegar before starting ensures absolutely no residual fat interferes with your meringue, and this one habit changed my success rate entirely.
03 -
  • Measure your ingredients by weight rather than volume because precision is what separates a silky buttercream from a disappointing one.
  • Cut your butter into small uniform cubes and spread them on a plate for at least an hour so every piece reaches the exact same softness before you begin.

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