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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare the batter
Preheat the oven to 350°F (175°C).
In a large bowl, beat the egg whites until stiff peaks form.
In another bowl, cream the butter and sugar together until light and fluffy.
Add the sweet milk and mix well.
Sift together the flour, corn starch, and baking powder, then gradually add to the butter mixture.
Fold in the beaten egg whites gently.
Add lemon to taste and the sliced citron, mixing carefully.
Bake
Pour the batter into a greased cake pan and bake for about 30-40 minutes or until a toothpick 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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Milk + corntop 10% of all pairsSmell alikemoderateCooked together6,955 recipes
Shared aroma: hexanal (green, grassy).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + corntop 13% of all pairsSmell alikemoderateCooked together6,165 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Corn + lemontop 13% of all pairsSmell alikemoderateCooked together1,927 recipes
Shared aroma: 2-nonenal (fatty, 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
- Egg whites
- Whipped to stiff peaks, they lighten the batter and help the cake rise.
- Butter
- Creamed with sugar, it adds richness and a tender crumb.
- Sugar
- Creamed with butter, it sweetens the cake and helps create a light texture.
- Flour
- Provides the structure that holds the cake together as it bakes.
- Baking powder
- Releases gas during baking, helping the cake rise.
- Citron
- Adds fruity flavor and chewy pieces throughout the cake.
The step that matters
Folding in the egg whites. Beaten egg whites hold air that gives the cake its lift. Stirring them in vigorously knocks out that air, so fold gently with a spatula until just combined.
Swap the lemon
How well each one fits the dish's main ingredients (egg, sugar, butter, milk, flour, corn):
- Vanillafits better
- Raisinfits better
- Coconutfits better
- Lemonthe original
Fit is the average pairing score against egg, sugar, butter, milk, flour, corn. 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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