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Boiled Frosting

A boiled frosting made from sugar, syrup, egg white, vanilla, almond extract, and water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Boiled Frosting

Why it works: Vanilla and almond match in chemistry and in kitchens. They rank in the top 4% of all ingredient pairs, and cooks put them together in 3,961 recipes. Both carry eucalyptol, which smells eucalyptus, herbal. The science ↓

Boiled Frosting

Ingredients

Directions

Make the syrup

  1. Combine sugar and water in a saucepan.

  2. Add Karo syrup and boil until it forms a soft ball when dropped in cold water.

Finish the frosting

  1. Slowly pour the syrup onto the lightly beaten egg white while beating briskly.

  2. Add vanilla and almond extracts, and mix well.

Recipe from a historical cookbook (Internet Archive).

Transcribed from a scanned cookbook and modernised for today's kitchens. Where the book gave no heat or time, or said "a moderate oven", the temperatures and times here may be modern equivalents rather than the book's own figures.

Photo for illustrative purposes only · Contact us to use it

Explore the science

The flavor team

The pairs that carry this dish. Each one is judged two ways: how much their aromas overlap, and how often cooks already put them together.

  1. Vanilla + almondtop 4% of all pairs
    Smell alikestrong
    Cooked together3,961 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  2. Sugar + syruptop 6% of all pairs
    Smell alikestrong
    Cooked together5,842 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  3. Sugar + vanillatop 8% of all pairs
    Smell alikelow
    Cooked together35,032 recipes

    Shared aroma: beta-damascenone (apple, rose).

  4. Syrup + vanillatop 12% of all pairs
    Smell alikelow
    Cooked together1,855 recipes

    Shared aroma: ethanol (alcoholic, ethereal).

  5. Sugar + almondtop 18% of all pairs
    Smell alikemoderate
    Cooked together15,679 recipes

    Shared aroma: 1-penten-3-one (fish, pungent).

Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 recipes: they work on texture and structure more than aroma.

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Sugar
Provides sweetness and, when boiled, forms the syrup that sets the frosting.
Egg white
Whipped with the hot syrup to create a light, airy structure.
Karo syrup
Helps keep the sugar syrup smooth and resists crystallization.

The step that matters

Pouring the hot syrup into the egg white. Pour slowly while beating briskly so the hot syrup cooks and aerates the egg white instead of scrambling it. A thin, steady stream lets the white absorb the syrup evenly and build volume.

Swap the almond

How well each one fits the dish's main ingredients (sugar, syrup, egg, vanilla):

  1. Chestnutfits about as well
  2. Almondthe original
  3. Hazelnutfits about as well
  4. Pistachiofits less well

Fit is the average pairing score against sugar, syrup, egg, vanilla. Candidates are from the same food group and used in at least 100 recipes.

“What each ingredient does” and “The step that matters” were written by Claude from this recipe’s own method and reviewed in samples by CompKitchen.

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