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Dessert

Lemon Pie

A lemon custard pie topped with meringue.

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.

Make the lemon filling

  1. Pour hot water over the sugar in a saucepan.

  2. Add the grated rind and juice of the lemon, the yolks of the eggs, the cornstarch dissolved in a little water, and the butter.

  3. Cook over medium heat until the mixture thickens.

  4. Pre-bake a pie crust and pour the lemon mixture into it.

Top and bake

  1. Beat the egg whites until frothy and spread them on top of the pie.

  2. Bake in a preheated oven at 350°F (175°C) until the meringue is lightly browned.

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
Yolks thicken the lemon filling, and whites whip into the meringue topping.
Cornstarch
Thickens the lemon filling as it heats so it sets into a sliceable custard.
Sugar
Sweetens the filling and helps stabilize the meringue topping.
Lemon
Provides the acidity and aroma that flavor the filling; the grated rind adds fragrant oils.
Butter
Adds richness and a smoother texture to the filling.

The step that matters

Cook the filling until it thickens. Cornstarch only thickens fully when the mixture reaches a boil and is stirred, so stopping early leaves a runny filling that will not set once cooled.

Swap the lemon

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

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

Fit is the average pairing score against sugar, egg, 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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