Ingredients

• 12 eggs, separated
• 1/2 teaspoon salt
• 3 pounds confectioners' sugar
• 1 pound butter, room temperature
• 1 teaspoon vanilla extract
• 1 teaspoon ground nutmeg
• 1 teaspoon ground allspice

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Instructions

1. Beat egg whites in a glass or metal bowl until stiff peaks form. Lift your beater or whisk straight up: the egg whites will form sharp peaks. Beat salt into egg whites.
2. Beat egg yolks in another bowl until light, 3 to 5 minutes. Blend confectioners' sugar and butter together in separate large bowl until crumbly; add egg yolks and vanilla extract and beat well. Mix in nutmeg and allspice. Beat egg whites into egg yolk mixture until well-blended. Transfer to a sealable container and store in the freezer.