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 ↓
Walnut Cake
Ingredients
Directions
The book says “a medium oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 350°F (175°C).
Make the batter
Squeeze the butter and add the sugar, then beat until creamy.
Add the eggs one at a time, beating thoroughly after each addition.
Mix in the flour and baking powder, then fold in the walnuts.
Boil the grated chocolate in a little milk, let it cool, and then add it to the mixture.
Bake
Pour the batter into a greased cake pan and bake for about 30 minutes.
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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Walnut + chocolatetop 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
- Eggs
- Add structure and richness as they are beaten into the batter.
- Flour
- Provides the structure that holds the cake together as it bakes.
- Butter
- Adds fat and tenderness, carrying flavor through the batter.
- Granulated sugar
- Sweetens the batter and helps it become light when beaten with butter.
- Royal baking powder
- Releases gas in the batter so the cake rises in the oven.
- Walnuts
- Add crunch and a nutty flavor folded through the batter.
The step that matters
Add the eggs one at a time, beating thoroughly after each addition. Each egg must be fully incorporated before the next is added, or the butter and sugar mixture can separate and the batter becomes uneven and less stable for rising.
Swap the walnut
How well each one fits the dish's main ingredients (flour, sugar, egg, butter, chocolate, milk):
- Almondfits better
- Hazelnutfits about as well
- Pecansfits about as well
- Walnutthe original
Fit is the average pairing score against flour, sugar, egg, butter, chocolate, milk. 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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