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
Make the batter
Cream together the butter and sugar.
Add the melted chocolate, sweet milk, and yolks of the eggs.
Sift the baking powder with the flour and add it alternately with the beaten egg whites.
Bake
Bake in two layers.
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
- Eggs
- Whites trap air for lift, while yolks add richness and structure to the batter.
- Butter
- Creaming with sugar traps air and gives the cake a tender, fine crumb.
- Flour
- Provides the main structure that holds the cake's crumb together as it bakes.
- Baking powder
- Releases gas in the batter to make the cake rise lighter.
- Sugar
- Sweetens the cake and helps it brown while tenderising the crumb.
The step that matters
Folding in the beaten egg whites alternately with the flour. Adding flour and whites in alternating portions while gently mixing keeps the batter aerated. Overmixing knocks out the air and develops gluten, leading to a dense, tough cake.
“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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