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
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.
Prepare the batter
Combine yolks of eggs, powdered sugar, preserved orange peel, finely pounded almonds, rose water, and lemon raspings in a bowl.
Stir the mixture with a wooden spoon in a circular-bottomed pan until it forms a light paste.
Whisk the egg whites until stiff peaks form.
Gently fold the whisked egg whites into the paste.
Sift the flour.
Carefully fold the sifted flour into the mixture.
Prepare the tins
Preheat the oven to 300°F (150°C).
Butter heart-shaped tins.
Line the tins with five sheets of paper.
Bake and serve
Pour the mixture into the prepared tins.
Ice the biscuits before baking.
Bake until lightly golden.
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.
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Orange + lemontop 1% of all pairsSmell alikestrongCooked together10,634 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Almond + flourtop 5% of all pairsSmell alikemoderateCooked together8,673 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Orange + almondtop 6% of all pairsSmell alikemoderateCooked together3,125 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Almond + lemontop 10% of all pairsSmell alikestrongCooked together5,655 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Orange + rosetop 10% of all pairsSmell alikelowCooked 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
- Eggs
- Egg whites whipped to stiff peaks give the batter lift, and yolks add richness and binding.
- Sugar
- Sweetens the batter and helps give the biscuits a crisp, golden surface.
- Sweet almonds
- Provide the bulk and nutty flavour of the batter, giving a tender crumb.
- Flour
- Adds structure so the batter sets into a firm biscuit once baked.
- Preserved orange peel
- Adds concentrated citrus aroma and a bitter-sweet flavour to the batter.
The step that matters
Folding the egg whites into the paste. Whisked egg whites trap air that gives lift. Folding gently keeps that air in; stirring hard deflates the foam and leaves dense biscuits.
Swap the orange
How well each one fits the dish's main ingredients (sugar, egg, almond, lemon, flour, rose, butter):
- Raisinfits better
- Vanillafits better
- Orangethe original
- Figfits about as well
Fit is the average pairing score against sugar, egg, almond, lemon, flour, rose, 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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