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 ↓
Chocolate 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.
Make the batter
Cream together the butter and sugar.
Add the melted chocolate and sweet milk.
Mix in the egg yolks.
Sift the baking powder with the flour.
Add the sifted mixture alternately with the beaten egg whites.
Bake in two layers at 350°F (175°C).
Make the icing
Boil the granulated sugar and boiling water until it forms a hair-like thread.
Pour the syrup over the beaten egg whites and beat until thick.
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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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + chocolatetop 13% of all pairsSmell alikemoderateCooked together15,404 recipes
Shared aroma: guaiacol (smoky, sweet).
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Chocolate + milktop 13% of all pairsSmell alikemoderateCooked together9,128 recipes
Shared aroma: gamma-nonanolactone (coconut, sweet).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 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
- Flour
- Provides the structure that holds the cake's crumb together as it bakes.
- Eggs
- Egg whites trap air for lift, while yolks add richness and moisture.
- Butter
- Adds fat that gives the cake a tender texture and rich flavor.
- Sugar
- Sweetens the cake and helps keep the crumb tender and moist.
- Baking powder
- Releases gas in the batter, helping the cake rise in the oven.
- Chocolate
- Adds chocolate flavor, richness, and a deep color to the cake.
The step that matters
Folding in the beaten egg whites. Egg whites hold the air that lifts the cake. Adding the sifted mixture alternately and mixing gently keeps that air from deflating, so the layers rise evenly and stay 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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