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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) · 8 ingredients
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Why it works: Flour and butter are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. 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 filling

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

  2. In a bowl, combine the grated lemon rind, lemon juice, sugar, hot water, flour, and egg yolks.

  3. Add the melted butter and mix well.

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

Make the meringue and finish

  1. While the pie is baking, beat the egg whites to a stiff froth.

  2. Gradually add 4 tablespoons of sugar to the egg whites and mix until glossy.

  3. Spread the meringue over the baked pie and return to the oven until 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. Flour + buttertop 12% of all pairs
    Smell alikelow
    Cooked together124,287 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. Flour + eggtop 15% of all pairs
    Smell alikelow
    Cooked together106,462 recipes

    Shared aroma: isobutyraldehyde (malty, green).

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

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

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

    Shared aroma: isobutyraldehyde (malty, green).

Flour and butter barely smell alike, yet cooks put them together in 124,287 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 lemon filling as they set and add richness to it.
Flour
Thickens the lemon filling so it holds a sliceable body.
Egg whites
Whipped into foam to form the airy, stable meringue topping.
Lemon juice
Provides the sharp acidity that balances the sweetness of the filling.
Sugar
Sweetens the filling and helps stabilize the whipped egg white meringue.
Butter
Adds richness and a smooth, tender texture to the filling.

The step that matters

Spreading the meringue over the baked pie. Meringue should be spread so it touches the crust edge all around, which helps prevent shrinking and weeping. Browning in the oven is then a matter of watching closely, since sugar darkens quickly.

Swap the lemon

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

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

Fit is the average pairing score against sugar, flour, 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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