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Dessert

Orange Hearts

A sweet biscuit made with sugar, egg yolks, preserved orange peel, almonds, lemon zest, egg whites, flour, and rose water.

From an old cookbook · modernised transcription
From a historical cookbook (Internet Archive) · 8 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 Hearts

Oven, in the book's wordsA slack oven

Ingredients

Directions

The book says “a slack oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.

Make the batter

  1. In a bowl, combine yolks of eggs, powdered sugar, preserved orange peel, finely pounded almonds, rose-water, and lemon raspings.

  2. Stir the mixture with a wooden spoon until it forms a light paste.

  3. Whisk the egg whites until stiff peaks form, then gently fold them into the paste.

  4. Sift in the flour and fold it in lightly.

Prepare and bake

  1. Preheat the oven to 300°F (150°C).

  2. Butter heart-shaped tins and line them with five sheets of paper.

  3. Ice the biscuits before baking them in the prepared tins.

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. Almond + flourtop 5% of all pairs
    Smell alikemoderate
    Cooked together8,673 recipes

    Shared aroma: isobutyraldehyde (malty, green).

  3. Orange + almondtop 6% of all pairs
    Smell alikemoderate
    Cooked together3,125 recipes

    Shared aroma: 2,4-decadienal (seaweed).

  4. Almond + lemontop 10% of all pairs
    Smell alikestrong
    Cooked together5,655 recipes

    Shared aroma: eucalyptol (eucalyptus, herbal).

  5. Orange + rosetop 10% of all pairs
    Smell alikelow
    Cooked together876 recipes

    Shared aroma: beta-damascenone (apple, rose).

Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs

What each ingredient does

Egg yolks
Add richness and moisture, and help bind the paste together.
Egg whites
Whipped to stiff peaks, they lighten the paste and give it rise.
Sugar
Adds sweetness and helps give the biscuits a tender texture.
Flour
Provides the structure that holds the biscuits together once baked.
Sweet almonds
Add fat and a tender, slightly crumbly texture to the paste.
Preserved orange peel
Adds a concentrated citrus aroma and a touch of bitterness.

The step that matters

Folding in the egg whites. Whipped whites trap air that gives the biscuits lift. Stirring them in vigorously or overmixing deflates the foam, so the biscuits bake up dense. Fold gently, just until no white streaks remain.

Swap the orange

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

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

Fit is the average pairing score against sugar, egg, almond, lemon, flour, rose. 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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