Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Walnut 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
Preheat the oven to 350°F (175°C).
Cream the butter and sugar together.
Add the beaten eggs, flour, and baking powder; mix well.
Stir in the chopped walnuts.
Pour the batter into a round tin and bake for 30 to 45 minutes.
Finish and serve
Once cool, cover with water icing and garnish with walnut halves.
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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Walnut + flourtop 12% of all pairsSmell alikemoderateCooked together5,873 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Butter + walnuttop 15% of all pairsSmell alikemoderateCooked together6,832 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 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
- Butter
- Creamed with sugar to trap air and give the cake a tender, rich crumb.
- Eggs
- Bind the batter and add structure as they set in the oven.
- Flour
- Forms the main structure of the cake as the batter sets.
- Baking powder
- Releases gas in the batter so the cake rises and becomes light.
- Walnuts
- Add nutty flavour and a bit of texture throughout the crumb.
The step that matters
Creaming the butter and sugar. Beating them until light and fluffy traps air bubbles that expand in the oven. Under-creaming leaves a dense cake, while the batter should be mixed just enough once flour goes in to avoid toughening it.
Swap the walnut
How well each one fits the dish's main ingredients (butter, egg, sugar, flour):
- Almondfits better
- Macadamia nutfits better
- Chestnutfits about as well
- Walnutthe original
Fit is the average pairing score against butter, egg, sugar, flour. 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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