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White Mountain Frosting

Dessert 🍰 American Vegetarian 🥦

White Mountain Frosting whips into a glossy, billowy topping with a marshmallow-like bite and clean vanilla finish. Cooked sugar syrup folded into stiff egg whites gives it a satiny sheen and stable peaks, perfect for frosting cakes or swirling onto cupcakes for celebrations and special desserts.

  • Prep10 min
  • Cook10 min
  • Serves32
  • DifficultyEasy
White Mountain Frosting
  1. 1

    In a saucepan over medium heat, stir together the sugar, water, and cream of tartar.

  2. 2

    Cover and bring to a boil, then uncover and cook until a candy thermometer reads 238 degrees F (115 degrees C), 5 to 7 minutes.

  3. 3

    The syrup should form a long thread when dripped from a spoon.

  4. 4

    While the syrup cooks, beat the egg whites in the bowl of a stand mixer fitted with the whisk attachment until stiff peaks form.

  5. 5

    When the syrup reaches temperature, slowly pour a thin stream into the egg whites while beating constantly until the frosting holds peaks.

  6. 6

    Stir in the vanilla and salt.

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