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Dessert

Apple Icing

A glaze made from sugar, water, cream of tartar, egg white, and grated apple.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Sugar and cream are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓

Apple Icing

Ingredients

Directions

Make the syrup

  1. Combine sugar, water, and cream of tartar in a saucepan.

  2. Heat gradually and boil without stirring until the syrup threads when dropped from a fork.

Whip and finish

  1. Pour the syrup slowly over the beaten egg white, beating constantly.

  2. Continue beating until the mixture thickens enough to spread.

  3. Add grated apple and mix well.

  4. Spread the icing on the cake.

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.

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. Sugar + creamtop 9% of all pairs
    Smell alikemoderate
    Cooked together43,450 recipes

    Shared aroma: 2,3-butanedione (butter, sweet).

  2. Sugar + appletop 18% of all pairs
    Smell alikelow
    Cooked together16,478 recipes

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

  3. Sugar + eggtop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

    Shared aroma: 2-nonenal (fatty, green).

  4. Cream + eggtop 24% of all pairs
    Smell alikelow
    Cooked together42,166 recipes

    Shared aroma: acetic acid (sour, vinegar).

  5. Cream + appletop 27% of all pairs
    Smell alikelow
    Cooked together3,089 recipes

    Shared aroma: 1-octen-3-one (mushroom, metallic).

Sugar and apple barely smell alike, yet cooks put them together in 16,478 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 into syrup, the body that sets the icing.
Egg white
Whipped to foam, it forms the airy structure of the icing.
Cream of tartar
Stabilizes the egg white foam and helps keep the syrup from crystallizing.
Grated apple
Adds moisture and fruity flavor to the icing.

The step that matters

Pour the syrup slowly over the egg white while beating constantly. Hot syrup poured too fast can cook or deflate the egg white, while a steady stream dissolves gradually into the foam and lets it thicken into a spreadable icing.

Swap the apple

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

  1. Vanillafits better
  2. Raisinfits better
  3. Strawberryfits better
  4. Applethe original

Fit is the average pairing score against sugar, cream, egg. 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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