Boiled icing, sometimes called “seven-minute frosting,” is a classic American cake topping known for its light, fluffy texture and glossy finish. Popular in mid-20th-century home baking, it was often used on layer cakes and cupcakes when a bright white, cloud-like frosting was desired. Unlike buttercream, this icing is made by pouring hot sugar syrup into whipped egg whites, creating a marshmallow-like consistency that sets beautifully. Its simplicity, using just a few pantry staples, made it a staple in vintage kitchens. The result is a delicate, airy frosting that spreads easily and gives cakes an elegant, homemade charm.
Ingredients
- 2 egg whites
- 1 cup granulated sugar
- ¼ cup water
- 1 tsp vanilla extract
Instructions
Step 1: Prepare Egg Whites
- Separate eggs and place egg whites in a clean mixing bowl
- Beat until stiff peaks form
Step 2: Make Sugar Syrup
- In a saucepan, combine sugar and water
- Bring to a boil over medium heat
Step 3: Cook Syrup
- Allow syrup to boil until slightly thickened (soft-ball stage if measured)
Step 4: Combine Syrup and Whites
- Slowly pour the hot syrup into the beaten egg whites
- Continue beating while pouring to prevent scrambling
Step 5: Add Flavoring
- Add vanilla extract
Step 6: Beat to Finish
- Beat mixture until thick, glossy, and holds shape
Step 7: Spread Icing
- Immediately spread over cake before it sets
Tips
- Use superfine sugar for smoother texture
- Add a pinch of cream of tartar for stability
- Flavor with almond or lemon extract instead of vanilla
- Use immediately, this icing does not store well
- Torch lightly for a toasted marshmallow effect
- Add food coloring for decorative cakes
- Ensure bowl is grease-free for proper whipping
- Use a stand mixer for easier beating
- Avoid overcooking syrup to prevent graininess
Nutrition
Calories: 110kcalCarbohydrates: 27gProtein: 2gSodium: 20mgPotassium: 30mgSugar: 26gCalcium: 5mgIron: 0.1mg
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