Swiss Buttercream

Ingredients

• 2 cups egg whites approx. 12 large
• 3 cups sugar
• 5 cups unsalted butter softened, 2 1/2 pounds, 10 sticks
• 1 tablespoon vanilla extract
• 1 cup sugar
• 4 large egg whites
• 26 tablespoons unsalted butter softened, 3 sticks plus 2 tablespoons
• 1 teaspoon vanilla extract
• 1/4 cup sugar
• 1 large egg white
• 6 tablespoons unsalted butter softened
• 1/4 teaspoon vanilla