Merengue Buttercream

Ingredients

  • 10 large egg whites
  • 2-1/2 cups sugar
  • 4 cups unsalted butter, cut into pieces, softened
  • 2 tsp vanilla extract

Preparation

Step 1

1. Whisk together egg whites and sugar in a heatproof mixing bowl over a pan of simmering water until sugar has dissolved, about 5 min. Test by rubbing the mixture between your fingers -- you shouldn't feel any sugar crystals.

2. Transfer bowl to the mixer stand with whisk attachment or use a handheld mixer and beat on high until it cools and stiff peaks form, 10 to 12 min.

3. Reduce speed to medium high and add butter a little at a time. (Buttercream may curdle but will become smooth as you continue to beat it.) Add vanilla.

4. Use within a few hours or refrigerate up to a week. Before using, bring to room temperature and beat on low until smooth. Makes 10 cups.