Double Boiler Frosting

Prep: 10 min Cook: 8 min Cuisine: American

Double boiler frosting is a fluffy, glossy icing perfect for decorating cakes and cupcakes. Light and sweet with vanilla flavor, it pairs well with various cake styles and is ideal for both novice and experienced bakers looking for a smooth, elegant finish.

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Ingredients

  • 2 egg whites
  • 1 1/2 cups sugar
  • 1/4 teaspoon cream of tartar
  • 1 tablespoon light corn syrup (optional substitute for cream of tartar)
  • 1/3 cup water

Instructions

  1. Combine egg whites, sugar, cream of tartar, and water in the top of a double boiler.
  2. Beat at high speed for 1 minute.
  3. Place over boiling water and beat on high speed for 7 minutes.
  4. Remove the pan from boiling water and add vanilla.
  5. Beat for 2 minutes longer on high speed.

Tips & Substitutions

Ensure your mixing bowl is clean and free of grease for optimal egg white whipping. If you don't have cream of tartar, the light corn syrup can help stabilize the egg whites. Be careful not to overbeat after adding the vanilla, as this can cause the frosting to lose its smooth texture. For variations, consider adding a touch of cocoa powder for a chocolate version, which pairs beautifully with Good Chocolate Cake.

Serving Suggestions

This Double Boiler Frosting is perfect for topping cakes, cupcakes, or cookies. It provides a light and fluffy texture that complements a rich chocolate cake or even a simple vanilla sponge. Consider pairing it with Mary'S Nut Muffins for a delightful treat. For an elegant touch, garnish with fresh fruit or edible flowers.

Storage & Reheating

Store any leftover frosting in an airtight container in the refrigerator for up to a week. To reheat, place the frosting back over a double boiler or in a microwave-safe bowl, heating gently and stirring until it regains its spreadable consistency. Avoid overheating, as it can cause the frosting to separate.

Nutrition & Diet Analysis (per serving)

Each serving of Double Boiler Frosting contains roughly 349 calories, with 4g protein, 30g carbohydrates, and 0g fat. It is an excellent source of potassium (75% of the Daily Value), and a good source of vitamin C.

349 kcal 17% DV
Protein Fat Carbs

Macronutrients

Protein 3.6g 7% DV
Total Fat 0.1g
Carbs 29.9g 11% DV
Fiber 1.1g 4% DV
Sugar 11.6g 23% DV

Electrolytes

Sodium 68.8mg 3% DV
Potassium 3537.1mg 75% DV

Vitamins & Minerals

Vitamin C 9.1mg 10% DV
Calcium 19.9mg 2% DV
Iron 1mg 6% DV
Diet fit Under 400 cal Low-fat
Contains Milk Egg

Estimated from ingredients & per-serving nutrition — verify against package labels for allergies or strict diets.

* % Daily Values based on a 2,000 calorie diet (FDA 2020).

Frequently Asked Questions

Can I use pasteurized egg whites instead of fresh?

Yes, pasteurized egg whites can be used in place of fresh ones, especially if you are concerned about food safety. They will whip up similarly, but make sure to check the package instructions for any adjustments in measurements.

What can I do if the frosting is too runny?

If the frosting turns out runny, try beating it longer over the double boiler to incorporate more air. If it remains loose, gradually add powdered sugar until the desired consistency is achieved. This will help stabilize the frosting.

Can I make this frosting ahead of time?

While this frosting is best used immediately after making, you can prepare it a day in advance. Store it in an airtight container in the fridge and rewhip briefly before using to restore its texture.

Nutrition is estimated from USDA FoodData Central ingredient data and may vary with brand, portion and preparation — see our methodology. This information is for general educational purposes only and is not medical or dietary advice (disclaimer).

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