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 ↓
Cocoa 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 the batter
Boil cocoa in 1 tablespoon of milk and set aside.
Cream together sugar and butter until light and fluffy.
Add flour, eggs, baking powder, and milk, mixing well.
In a separate bowl, beat egg whites to stiff peaks, adding sugar and cornstarch to stiffen.
Fold in the cocoa mixture and combine all ingredients gently.
Bake and finish
Pour batter into a greased cake pan and bake at 350°F (175°C) until a toothpick comes out clean.
Once cooled, cover each layer with a thin layer of frosting and sprinkle with dry cocoa.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Milk + cocoatop 10% of all pairsSmell alikemoderateCooked together643 recipes
Shared aroma: methyl 2-methylbutyrate (fruity, apple).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + milktop 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).
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
- Butter
- Creams with sugar to trap air, giving the cake a light, tender crumb and richness.
- Eggs
- Bind the batter and add structure and richness as the cake sets.
- Flour
- Forms the main structure that holds the cake together as it bakes.
- Baking powder
- Releases gas during baking so the cake rises and becomes airy.
- Egg whites
- Whipped to stiff peaks, they add lightness and help the cake rise.
- Cocoa
- Provides the chocolate flavor and deep color of the cake.
The step that matters
Folding in the cocoa mixture and egg whites. Folding gently keeps the air trapped in the whipped egg whites. Stirring vigorously would deflate the batter, leading to a denser, flatter cake.
Swap the cocoa
How well each one fits the dish's main ingredients (sugar, butter, flour, egg, milk):
- Almondfits better
- Chestnutfits better
- Milletfits better
- Cocoathe original
Fit is the average pairing score against sugar, butter, flour, egg, milk. 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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