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 says “a hot oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the cake batter
Preheat the oven to 350°F (175°C).
In a bowl, cream together the sugar and butter until light and fluffy.
Add the milk and mix well.
Gradually add the flour and baking powder, mixing until smooth.
In a separate bowl, beat the egg whites until stiff peaks form, then fold them into the batter.
Bake the layers
Divide the batter into four layers and bake for about 30 minutes.
Make and spread the chocolate cream
For the chocolate cream, combine 1 cup of milk, 1 cup of sugar, cornstarch, and egg yolks in a saucepan.
Add the square of chocolate and cook over medium heat until thickened.
Spread the chocolate cream between the layers and over the top of the cake.
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 + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Chocolate + creamtop 11% of all pairsSmell alikemoderateCooked together5,466 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 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
- Egg whites
- Whipped to stiff peaks, they trap air and help the cake rise and become light.
- Flour
- Forms the structure that holds the cake together as it bakes.
- Butter
- Creamed with sugar, it adds tenderness and richness to the crumb.
- Egg yolks
- Thicken the chocolate cream as it cooks and add richness.
- Cornstarch
- Thickens the chocolate cream so it sets smooth and spreadable.
- Baking powder
- Releases gas in the batter, helping the layers rise.
The step that matters
Cooking the chocolate cream. Egg yolks and cornstarch thicken only when heated enough, but overheating can scramble the yolks or leave lumps. Cook over medium heat, stirring constantly, until smooth and thickened.
“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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