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Sauce

Lemon Sauce

A sauce made from flour, sugar, water, butter, and lemon.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 ingredients
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Lemon Sauce

Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Lemon Sauce

Ingredients

Directions

  1. Mix flour with sugar and cold water to form a paste.

  2. Stir in boiling water and cook until creamy.

  3. Add butter, grated lemon rind, and lemon juice.

  4. Cook slowly until the sauce is clear.

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. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Flour + sugartop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

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

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

  4. Flour + lemontop 17% of all pairs
    Smell alikemoderate
    Cooked together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

Flour and butter barely smell alike, yet cooks put them together in 124,287 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

Flour
Starch that swells in hot liquid and thickens the sauce.
Sugar
Adds sweetness and balances the sharpness of the lemon.
Butter
Adds fat for a smoother, richer mouthfeel and a glossy finish.
Lemon juice
Adds acidity and bright lemon flavour.
Lemon rind
Adds aromatic lemon oils without extra sourness.

The step that matters

Stir the boiling water into the paste, then cook until creamy. Adding the hot liquid to the flour paste while stirring lets the starch disperse evenly. If it is added unevenly, lumps form that will not smooth out. The starch must cook fully to thicken properly.

Swap the lemon

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

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

Fit is the average pairing score against flour, sugar, butter. 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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