Why it works: Almond and flour are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 8,673 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Almond Hearts
Ingredients
Directions
The book says “a hot oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Finely pound the blanched almonds with the whole eggs until smooth.
Mix in the powdered sugar and lemon zest until well combined, then transfer the mixture to a large bowl (12-quart capacity).
Add the yolks of 24 eggs and whisk for 15 minutes.
Incorporate 6 whole eggs and whisk for another 15 minutes.
Repeat with 6 more whole eggs, whisking until thick.
Fold and fill the tins
Whisk the 24 egg whites until stiff peaks form.
Sift the flour into the almond mixture and gently fold in the egg whites.
Butter heart-shaped tins and line with 6 sheets of paper.
Bake
Bake in a gentle oven at 300°F (150°C) until set.
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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Almond + flourtop 5% of all pairsSmell alikemoderateCooked together8,673 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Almond + lemontop 10% of all pairsSmell alikestrongCooked together5,655 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Lemon + flourtop 17% of all pairsSmell alikemoderateCooked together30,404 recipes
Shared aroma: isobutyraldehyde (malty, green).
Egg and flour barely smell alike, yet cooks put them together in 106,462 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
- Whipped whites give lift and structure, while the yolks add richness and moisture.
- Sweet almonds
- Ground almonds provide body, fat and a tender, moist crumb.
- Powdered sugar
- Dissolves finely into the batter, adding sweetness and a smooth, fine texture.
- All-purpose flour
- Gives the baked cake its structure once it sets in the oven.
- Lemon zest
- Adds bright citrus aroma and flavor to the batter.
The step that matters
Whisk the egg whites to stiff peaks and fold gently. Stiff whites trap air that lifts the batter. Folding gently with flour keeps that air in, so the cakes rise and stay light instead of collapsing.
Swap the lemon
How well each one fits the dish's main ingredients (almond, sugar, egg, flour):
- Raisinfits better
- Vanillafits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against almond, sugar, egg, flour. 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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