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Dessert

Lemon Pie

A lemon custard pie topped with meringue.

From an old cookbook · modernised transcription
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Why it works: Milk and flour are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓

Lemon Pie

Ingredients

Directions

Make the filling

  1. Grate the rind of the lemon.

  2. Remove the tough skin and chop the pulp.

  3. In a bowl, combine the egg yolks, 1 cup of sugar, milk, lemon rind, lemon pulp, and cornstarch or flour.

  4. Pour the mixture into a rich pie crust.

Top and bake

  1. Beat the egg whites to stiff peaks, then gradually add 4 teaspoons of sugar.

  2. Spread the meringue on top of the pie and bake lightly until golden.

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. Milk + flourtop 14% of all pairs
    Smell alikelow
    Cooked together78,219 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  2. Sugar + flourtop 15% of all pairs
    Smell alikemoderate
    Cooked together92,116 recipes

    Shared aroma: phenylacetaldehyde (hawthorne, honey).

  3. Milk + lemontop 15% of all pairs
    Smell alikemoderate
    Cooked together19,053 recipes

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

  4. Egg + flourtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  5. Lemon + flourtop 17% of all pairs
    Smell alikemoderate
    Cooked together30,404 recipes

    Shared aroma: isobutyraldehyde (malty, green).

Milk and flour barely smell alike, yet cooks put them together in 78,219 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 yolks
Thicken the filling and add richness and a smooth, custard-like texture.
Sugar
Sweetens the filling and helps stabilise the egg white meringue.
Milk
Adds moisture and body to the filling.
Lemon
Provides the acidity and aroma that define the pie's flavour.
Cornstarch or flour
Thickens the filling so it sets and holds its shape when sliced.
Egg whites
Whipped into foam, they give the meringue its light, airy structure.

The step that matters

Beat the egg whites to stiff peaks before adding the sugar. Whipped whites trap air in a foam that holds the meringue up. Adding sugar gradually helps stabilise the foam, while under-beaten whites can collapse or weep.

Swap the lemon

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

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

Fit is the average pairing score against egg, sugar, milk, flour. 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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