Why it works: Milk and vanilla are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 19,187 recipes. Both carry ethyl caproate, which smells fruity, apple peel. 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
Melt cocoa powder with a little water over low heat.
In a bowl, mix egg yolks, butter, and sugar; beat thoroughly.
Add sour milk, flour, and melted cocoa to the mixture.
Fold in the beaten egg whites and vanilla extract.
Bake and assemble
Divide the batter into two layers and bake at 350°F (175°C) until done.
Cool and layer with vanilla icing.
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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Milk + vanillatop 5% of all pairsSmell alikemoderateCooked together19,187 recipes
Shared aroma: ethyl caproate (fruity, apple peel).
-
Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
-
Vanilla + cocoa powdertop 10% of all pairsSmell alikemoderateCooked together2,189 recipes
Shared aroma: sotolon (curry, maple).
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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
- Yolks enrich and bind the batter, while beaten whites add lift and a light crumb.
- Baking soda
- Reacts with the sour milk's acid to produce gas that lifts the cake.
- Butter
- Adds fat for tenderness and a rich mouthfeel.
- Flour
- Forms the structure that holds the cake together as it bakes.
- Sour milk
- Its acidity activates the baking soda and tenderizes the crumb.
- Cocoa powder
- Provides chocolate flavor and deep color to the cake.
The step that matters
Fold in the beaten egg whites. Folding gently keeps the air in the whites intact; stirring hard would deflate them and make the cake denser and less airy.
“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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