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Dessert

Lemon Pie

A lemon custard pie topped with a sweet meringue.

From an old cookbook · modernised transcription
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Why it works: Corn and lemon 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. In a pot, stir corn starch and sugar into boiling water with a pinch of salt.

  2. Let the mixture cool.

  3. Add lemon juice, lemon rind, and egg yolk to the cooled mixture.

  4. Pour into a pie crust and bake until set.

Top and brown

  1. Beat the egg white until stiff, then mix in sugar.

  2. Spread the egg white mixture over the pie and return to the oven to brown.

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. Corn + lemontop 13% of all pairs
    Smell alikemoderate
    Cooked together1,927 recipes

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

  2. Sugar + lemontop 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. Corn + sugartop 21% of all pairs
    Smell alikelow
    Cooked together7,168 recipes

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

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

Corn starch
Thickens the boiled liquid into a smooth, sliceable lemon filling as it cooks and cools.
Egg yolk
Adds richness and helps the filling set firm when baked.
Egg white
Whipped with sugar to form a stable meringue that browns on top.
Lemon juice
Provides the sharp acidity that defines the pie's flavor.

The step that matters

Let the mixture cool before adding the egg yolk. Adding egg yolk to a hot starch mixture can scramble it and thin the filling. Cooling first keeps the yolk smooth and lets the starch set properly.

Swap the lemon

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

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

Fit is the average pairing score against corn, sugar, 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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