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Dessert

Orange Tarts

A baked tart filled with orange and lemon juice, sugar, butter, and eggs.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 5 ingredients
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Why it works: Orange and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓

Orange Tarts

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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.

Prepare

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

Make the filling

  1. In a bowl, combine the juice and grated rind of the orange and lemon.

  2. Add the sugar, butter, and egg yolks to the mixture and mix well.

  3. In a separate bowl, beat the egg white until stiff peaks form.

  4. Gently fold the egg white into the orange mixture.

Bake

  1. Pour the filling into tart shells.

  2. Bake for 20-25 minutes or until set.

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. Orange + lemontop 1% of all pairs
    Smell alikestrong
    Cooked together10,634 recipes

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

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

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

  3. Butter + eggtop 17% of all pairs
    Smell alikemoderate
    Cooked together118,967 recipes

    Shared aroma: decanal (soap, orange peel).

  4. Sugar + buttertop 17% of all pairs
    Smell alikemoderate
    Cooked together98,233 recipes

    Shared aroma: guaiacol (smoky, sweet).

  5. Lemon + sugartop 18% of all pairs
    Smell alikelow
    Cooked together53,532 recipes

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

Lemon and sugar 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 enrich and set the filling, while whipped whites lighten its texture.
Sugar
Sweetens the filling and balances the sharpness of the citrus juice.
Butter
Adds fat for richness and a smooth, tender texture in the filling.
Orange and lemon juice
Provides the main citrus flavour and acidity that gives the tarts their tang.

The step that matters

Folding in the egg white. Whipped egg white traps air that gives the filling lightness. Stirring it in vigorously knocks out that air, so the tarts bake up dense rather than light. Fold gently, only until no white streaks remain.

Swap the orange

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

  1. Vanillafits about as well
  2. Orangethe original
  3. Raspberryfits about as well
  4. Figfits about as well

Fit is the average pairing score against lemon, sugar, butter, 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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