Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Citron 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
Preheat the oven to 350°F (175°C).
Make the batter
Beat the egg whites and yolks separately.
Cream the butter and sugar together until light and fluffy.
Add the egg yolks and sweet milk, mixing well.
Sift together the flour and baking powder, then gradually add to the mixture.
Fold in the beaten egg whites and the chopped citron.
Bake
Pour the batter into long, narrow pans.
Bake until a toothpick inserted in the center comes out clean.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 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).
Butter and flour 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
- Whites beaten separately and folded in add lightness and help the cake rise and hold its structure.
- Butter
- Creamed with sugar to trap air, giving the cake a tender, fine-textured crumb and rich flavor.
- Sugar
- Creamed with butter to aerate the batter and adds sweetness and tenderness to the crumb.
- Flour
- Provides the main structure that sets the cake as the batter bakes.
- Baking powder
- Releases gas during baking so the cake rises and becomes light.
- Citron
- Chopped citron rolled in flour adds candied fruit flavor and chewy pieces throughout the cake.
The step that matters
Folding in the beaten egg whites. Egg whites hold air from beating. Stirring them in too hard deflates that air, so the cake bakes up denser and less light.
“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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