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Swiss Meringue Buttercream

You will need 15 cups of buttercream to complete Martha's Meyer Lemon Anniversary Cake (14 cups for frosting the cake; one cup for piping around the layers and assembling the toppers).

Martha Stewart Living, January 2006 http://www.marthastewart.com/353414/swiss-meringue-buttercream
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  • Yield Makes 7 1/2 cups

Ingredients

    • 8 large egg whites
    • 2 1/2 cups sugar
    • 1/4 teaspoon salt
    • 3 cups (6 sticks) unsalted butter, cut into pieces, softened
    • Yellow gel-paste food coloring

Directions

  1. Whisk egg whites, sugar, and salt in the heatproof bowl of an electric mixer set over a pan of simmering water until sugar has dissolved and mixture registers 160 degrees, about 4 minutes. Attach bowl to mixer fitted with the whisk attachment. Beat on high speed until cool and stiff (but not dry) peaks form, about 6 minutes.
  2. Fit mixer with the paddle attachment. With mixer on medium-low speed, add butter, several pieces at a time, mixing well after each addition (meringue will deflate slightly as butter is added). Mix until frosting comes together but is still smooth and glossy, 3 to 5 minutes. Tint with food coloring; stir until smooth.

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