Why it works: Milk and butter 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 Layer 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 cake
Preheat the oven to 350°F (175°C).
In a bowl, mix sugar, flour, milk, eggs, and baking powder until smooth.
Pour the batter into a greased cake pan and bake for 25-30 minutes or until a toothpick comes out clean.
Make the filling and icing
For the filling and icing, combine grated chocolate, sugar, and milk in a saucepan.
Add butter and heat on the stove without stirring until it boils.
Boil for 10 minutes, then remove from heat and let cool, stirring occasionally.
Once cool, spread the mixture between the cake layers and on top.
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 + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Chocolate + walnuttop 10% of all pairsSmell alikemoderateCooked together1,548 recipes
Shared aroma: 3-ethyl-2,5-dimethylpyrazine (roasted, nutty).
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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Flour + walnuttop 12% of all pairsSmell alikemoderateCooked together5,873 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).
Flour and butter 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
- Forms the structure that holds the cake's crumb together as it bakes.
- Eggs
- Add structure and richness, helping the batter set and bind during baking.
- Baking powder
- Releases gas during baking, helping the cake rise and turn light.
- Sugar
- Sweetens the cake and helps it brown and keep it moist.
- Grated chocolate
- Provides the chocolate flavour and, once boiled, thickens into the filling and icing.
- Butter
- Adds fat for richness and a smooth, glossy texture in the filling and icing.
The step that matters
Boiling the filling and icing for 10 minutes. Boiling evaporates water and lets the sugar and chocolate concentrate, so the mixture thickens as it cools. Too little boiling leaves it runny; too long can make it stiff or grainy.
Swap the walnut
How well each one fits the dish's main ingredients (sugar, flour, milk, egg, chocolate, butter):
- Almondfits better
- Hazelnutfits about as well
- Pecansfits about as well
- Walnutthe original
Fit is the average pairing score against sugar, flour, milk, egg, chocolate, butter. 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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