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Dessert

Lemon Pie

A lemon custard pie made with eggs, sugar, cornstarch, lemon rind and juice, butter, and boiling water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 6 ingredients
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Why it works: Lemon and butter 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

The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.

Prepare the filling

  1. Preheat the oven to 350°F (175°C).

  2. In a bowl, beat the eggs, sugar, and cornstarch together.

  3. Melt the butter in boiling water and pour it into the egg mixture.

  4. Add the lemon rind and juice, and mix well.

Bake and serve

  1. Pour the mixture into a pie crust and bake until set.

  2. Save the whites of 2 eggs for frosting.

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 + buttertop 16% of all pairs
    Smell alikemoderate
    Cooked together41,227 recipes

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

  2. Egg + buttertop 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. Egg + lemontop 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

Eggs
Set the filling into a custard as they cook, adding structure and body.
Sugar
Sweetens the filling and helps balance the tartness of the lemon.
Cornstarch
Thickens the filling so it holds its shape when sliced.
Lemon
Adds acidity and bright lemon aroma from the juice and rind.
Butter
Adds richness and a smoother, silkier mouthfeel to the filling.

The step that matters

Pour the mixture into a pie crust and bake until set. Cornstarch thickens only when heated, and eggs set as proteins coagulate. Underbaking leaves the filling runny and soft, while overbaking can make the eggs weep or curdle, so check for a set center rather than relying on a fixed time.

Swap the lemon

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

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

Fit is the average pairing score against egg, sugar, butter. 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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