Why it works: Sugar and flour are a kitchen classic. They rank in the top 15% of all ingredient pairs, and cooks put them together in 92,116 recipes. Both carry phenylacetaldehyde, which smells hawthorne, honey. The science ↓
A Good Sponge Cake
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.
Prepare
Grate the rind of the lemon and mix it with the sugar, or crush the sugar to powder.
Weigh the sugar to match the weight of the eggs in their shells.
Separate the egg whites from the yolks.
Make the batter
Beat the yolks in a large bowl for 10 minutes, then gradually add the sugar and mix well.
Whisk the egg whites until they form stiff peaks.
Gently fold the egg whites into the yolk mixture.
Sift the flour and gently fold it into the mixture without beating.
Pour the batter into a well-buttered mold.
Bake
Bake in a moderate oven at 350°F (175°C) for 1 hour and 15 minutes.
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.
Photo for illustrative purposes only · Contact us to use it
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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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).
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Lemon + sugartop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
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Lemon + eggtop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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 yolks and whites provide the airy structure that lets the sponge rise and set.
- Sugar
- Sweetens the cake and helds the beaten eggs stable while adding tenderness.
- All-purpose flour
- Provides the starch that sets the crumb once the cake is baked.
- Lemon rind
- Adds bright aromatic lemon flavour from the oils in the zest.
The step that matters
Folding in the egg whites and flour. Egg whites hold air only while whisked; overmixing or beating after adding flour knocks out bubbles and deflates the batter, leaving a dense cake. Fold gently and stop once combined.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar, flour):
- Raisinfits better
- Vanillafits better
- Lemonthe original
- Figfits about as well
Fit is the average pairing score against egg, sugar, 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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