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Lemon Sauce

A citrus sauce made with butter, lemon, sugar, cornstarch, and boiling water.

From an old cookbook · modernised transcription
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Lemon Sauce

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 ↓

Lemon Sauce

Ingredients

Directions

  1. Cream together the butter, sugar, and corn starch.

  2. Add the grated rind and juice of the lemon.

  3. Pour in the boiling water slowly while stirring.

  4. Cook for five minutes in a double boiler.

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

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

  2. Butter + corntop 14% of all pairs
    Smell alikemoderate
    Cooked together7,345 recipes

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

  3. Butter + lemontop 16% of all pairs
    Smell alikemoderate
    Cooked together41,227 recipes

    Shared aroma: 3-hexenal (apple, fruity).

  4. Butter + sugartop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  5. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

Lemon and sugar 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

Butter
Adds richness and a smooth, rounded mouthfeel to the sauce.
Corn starch
Thickens the sauce as it heats in the liquid, giving it body.
Sugar
Adds sweetness that balances the sharpness of the lemon.
Lemon
Provides acidity and bright citrus aroma from the rind and juice.

The step that matters

Pour in the boiling water slowly while stirring. Starch granules clump easily when liquid is added too fast. Adding the water gradually while stirring keeps the starch dispersed so it thickens evenly without lumps.

Swap the lemon

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

  1. Vanillafits better
  2. Coconutfits better
  3. Figfits better
  4. Lemonthe original

Fit is the average pairing score against butter, 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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