Seafoam Frosting - Fluffy Brown Sugar Frosting

Seafoam Frosting with Brown Sugar
Photo: Diana Rattray
  • Total: 40 mins
  • Prep: 20 mins
  • Cook: 20 mins
  • Yield: 1 cake's worth (1 portion)
Nutritional Guidelines (per serving)
835 Calories
0g Fat
182g Carbs
26g Protein
See Full Nutritional Guidelines Hide Full Nutritional Guidelines
Nutrition Facts
Servings: 1 cake's worth (1 portion)
Amount per serving
Calories 835
% Daily Value*
Total Fat 0g 1%
Saturated Fat 0g 0%
Cholesterol 0mg 0%
Sodium 410mg 18%
Total Carbohydrate 182g 66%
Dietary Fiber 0g 0%
Protein 26g
Calcium 31mg 2%
*The % Daily Value (DV) tells you how much a nutrient in a food serving contributes to a daily diet. 2,000 calories a day is used for general nutrition advice.
(Nutrition information is calculated using an ingredient database and should be considered an estimate.)

This seafoam frosting is a fluffy brown sugar frosting. It's an easy frosting to make. A reliable candy thermometer makes the cooking a snap.


  • 1 1/2 cups brown sugar
  • 1/2 cup water
  • 1/4 teaspoon cream of tartar
  • 4 large egg whites
  • 1/2 teaspoon vanilla extract

Steps to Make It

  1. Combine the brown sugar, water, and cream of tartar in a heavy saucepan; stir to blend. Attach a candy thermometer. Bring to a boil. Boil to 242 F on the candy thermometer (thread stage).

  2. Meanwhile, beat the egg whites until stiff peaks form.

  3. Slowly pour the syrup mixture into the egg whites in a thin stream while beating.

  4. Beat in the vanilla 

  5. Makes a generous amount, enough to frost and fill a 2- or 3-layer cake.

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