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Dessert

Lemon Pie

A lemon pie with a cornstarch‑based filling of butter, sugar, and eggs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Butter and lemon are a kitchen classic. They rank in the top 16% of all ingredient pairs, and cooks put them together in 41,227 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Lemon Pie

Ingredients

Directions

Make the filling

  1. In a saucepan, combine boiling water and cornstarch, stirring until smooth.

  2. Add sugar and continue to stir until the mixture thickens.

  3. Remove from heat and mix in the creamed butter, lemon juice, and lemon zest.

  4. Allow the mixture to cool slightly before adding the egg yolks, stirring well.

Assemble

  1. Pour the filling into a pie crust and let it set.

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

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

  2. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

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

    Shared aroma: guaiacol (smoky, sweet).

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

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

  5. Lemon + eggtop 19% of all pairs
    Smell alikelow
    Cooked together44,316 recipes

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

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

Cornstarch
Thickens the boiling water into a smooth, set filling.
Sugar
Adds sweetness and helps thicken the filling as it cooks.
Butter
Adds fat for a rich, smooth texture in the filling.
Lemon juice
Provides the sharp acidity that defines the pie's flavor.
Eggs
Enrich the filling and help it set into a custard-like texture.

The step that matters

Adding the egg yolks. If the filling is still very hot, the egg yolks can scramble and become grainy. Cooling it slightly first lets the yolks blend in smoothly, and stirring well keeps them evenly mixed.

Swap the lemon

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

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

Fit is the average pairing score against sugar, butter, 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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