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Dessert

Plain Icing

A simple icing made from beaten egg whites, sugar, lemon extract, and optional corn starch.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 4 ingredients
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Why it works: Lemon and corn are a kitchen classic. They rank in the top 13% of all ingredient pairs, and cooks put them together in 1,927 recipes. Both carry 2-nonenal, which smells fatty, green. The science ↓

Plain Icing

Ingredients

Directions

  1. Beat the egg whites until very stiff.

  2. Slowly stir in the fine sugar and flavor with lemon extract.

  3. If desired, add 1 tablespoon of corn starch to help it dry quickly.

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. Lemon + corntop 13% of all pairs
    Smell alikemoderate
    Cooked together1,927 recipes

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

  2. Sugar + lemontop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

  3. Egg + lemontop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

    Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).

  4. Egg + sugartop 21% of all pairs
    Smell alikemoderate
    Cooked together122,807 recipes

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

  5. Sugar + corntop 21% of all pairs
    Smell alikelow
    Cooked together7,168 recipes

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

Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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

Egg whites
Whipped into a stiff foam that gives the icing its airy structure and body.
Fine sugar
Sweetens the icing and stiffens the foam as it dissolves into the whites.
Corn starch
Absorbs moisture so the icing dries faster and firms up on the surface.

The step that matters

Adding the sugar slowly. Sugar added too quickly deflates the whipped egg white foam, so the icing loses volume and stiffness. Adding it gradually lets the sugar dissolve into the foam and keeps it stable.

Swap the lemon

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

  1. Vanillafits better
  2. Coconutfits about as well
  3. Raisinfits about as well
  4. Lemonthe original

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