Why it works: Cream and butter are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 41,516 recipes. Both carry delta-dodecalactone, which smells sweet, creamy. The science ↓
Sponge Drops
Ingredients
Directions
The book says “a very quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Beat the eggs and sugar together until frothy.
Stir in the flour mixed with cream of tartar and baking soda, then add lemon flavoring.
Bake
Butter the baking sheets and drop the batter by teaspoonfuls, spacing them about 3 inches apart.
Bake immediately in a very hot oven at 400°F (200°C), watching closely to prevent burning.
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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Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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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).
Flour and butter barely smell alike, yet cooks put them together in 124,287 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 with sugar to trap air, giving the drops lift and a light, spongy crumb.
- All-purpose flour
- Provides the starch and gluten structure that sets the drops once baked.
- Cream of tartar
- Acidifies the batter so it reacts with baking soda to produce gas for rising.
- Baking soda
- Reacts with the acid in the batter to release carbon dioxide, helping the drops rise.
- Sugar
- Sweetens the batter and stabilizes the beaten eggs, adding tenderness and browning.
The step that matters
Bake immediately in a very hot oven. The leavening reaction between cream of tartar and baking soda starts as soon as the batter is mixed. Delaying the bake lets gas escape, so the drops may spread flat and rise poorly.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar, flour, cream, butter):
- Vanillafits better
- Raisinfits better
- Coconutfits about as well
- Lemonthe original
Fit is the average pairing score against egg, sugar, flour, cream, 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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