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Dessert

Lemon Pie

A lemon custard filling topped with meringue baked in a pre‑baked crust.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 7 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 ↓

Lemon Pie

Ingredients

Directions

Make the filling

  1. Dissolve corn starch in cold water.

  2. Combine lemon juice, lemon rind, sugar, and egg yolks in a dish.

  3. Add the dissolved corn starch to the dish.

  4. Place the dish in hot water.

  5. Boil until the mixture thickens.

Prepare the crust

  1. Pre‑bake the pie crust until partially cooked.

Make the meringue and bake

  1. Beat the egg whites with 2 tablespoons of sugar until stiff peaks form.

  2. Spread the meringue on top of the pie filling.

  3. Brown the meringue in the oven.

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

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

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

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

  4. Sugar + eggtop 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).

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

Corn starch
Thickens the lemon filling as it heats with the water.
Egg yolks
Enrich and thicken the filling, adding richness and body.
Egg whites
Whipped into foam to form the airy, stable meringue topping.
Sugar
Sweetens the filling and helps stabilise the whipped egg whites.
Lemon juice
Adds acidity that balances the sweetness and brightens the filling.

The step that matters

Boil until the mixture thickens. Corn starch only thickens fully once it reaches a boil, and it needs to be stirred so it does not scorch or form lumps. Undercooked starch leaves a runny filling that will not hold a clean slice.

Swap the lemon

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

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

Fit is the average pairing score against sugar, egg, 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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