Why it works: Sugar and cream are a kitchen classic. They rank in the top 9% of all ingredient pairs, and cooks put them together in 43,450 recipes. Both carry 2,3-butanedione, which smells butter, sweet. The science ↓
Sponge Cake
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 350°F (175°C).
Beat the egg yolks and sugar together in a bowl.
Dissolve the baking soda in the warm water.
Mix the cream of tartar into the flour.
Make the batter
Stir the egg whites in lightly.
Add the flour mixture gradually.
Add a little salt and flavor with lemon.
Bake
Bake immediately for 20 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.
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 + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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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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Flour + lemontop 17% of all pairsSmell alikemoderateCooked together30,404 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, 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
- Egg whites trap air and give the cake its light, airy structure, while yolks add richness.
- Sugar
- Sweetens the cake and helps stabilize the beaten eggs.
- Flour
- Forms the cake's structure once it sets in the oven.
- Cream of tartar
- Acidifies the batter, stabilizing the whipped egg whites and keeping them from collapsing.
- Baking soda
- Reacts with the acid in the batter to release gas, helping the cake rise.
The step that matters
Stir the egg whites in lightly. Folding gently keeps the air trapped in the whipped whites. Stirring vigorously knocks out air, so the cake rises less and turns out dense.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar, flour, cream):
- Raisinfits better
- Vanillafits better
- Figfits about as well
- Lemonthe original
Fit is the average pairing score against egg, sugar, flour, cream. 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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