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Dessert

Lemon Pie

A baked lemon custard pie topped with stiff‑egg‑white meringue.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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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

The book gives no oven temperature. The 400°F (200°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare

  1. Preheat the oven to 400°F (200°C).

  2. Strain the lemon juice into a bowl.

Make and bake the filling

  1. Add sugar, egg yolks, milk, and flour to the lemon juice and mix well.

  2. Pour the mixture into a pie plate lined with puff pastry.

  3. Bake until set.

Top and brown

  1. In a separate bowl, beat the egg whites until stiff peaks form, then gradually add 1 teaspoon of sugar.

  2. Spread the beaten egg whites over the baked pie and brown 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. 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. Lemon + milktop 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

Eggs
Yolks thicken the filling while whites whip into a meringue topping that sets and browns.
Sugar
Sweetens the filling and stabilises the beaten egg whites for the topping.
Flour
Thickens the lemon filling so it sets rather than running when baked.
Milk
Adds moisture and richness to the filling, softening the lemon's sharpness.
Lemon
Provides the tart acidity and flavour that defines the pie.

The step that matters

Beating the egg whites to stiff peaks. Whites must be fully whipped without any yolk or grease, or they will not hold a stiff foam. Sugar added gradually helps the foam stay stable, so the topping holds its shape and browns evenly.

Swap the lemon

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

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

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