Why it works: Sugar and vanilla are a kitchen classic. They rank in the top 8% of all ingredient pairs, and cooks put them together in 35,032 recipes. Both carry beta-damascenone, which smells apple, rose. The science ↓
Walnut Cake
Ingredients
Directions
The book says “a moderate oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Make the batter
Cream the butter and sugar together.
Add the flour and chopped walnuts to the mixture.
Whisk the egg whites to a stiff froth and gently fold them into the batter.
Pour the batter into a cake tin lined with buttered paper.
Bake and finish
Bake in a moderate oven at 350°F (175°C) for one hour.
When the cake is half cooked, scatter half of the walnuts on top.
Alternatively, once cooled, ice the cake with royal icing and arrange the walnuts on top before the icing sets.
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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Sugar + vanillatop 8% of all pairsSmell alikelowCooked together35,032 recipes
Shared aroma: beta-damascenone (apple, rose).
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Walnut + vanillatop 10% of all pairsSmell alikestrongCooked together2,730 recipes
Shared aroma: eucalyptol (eucalyptus, herbal).
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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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Flour + vanillatop 12% of all pairsSmell alikemoderateCooked together19,241 recipes
Shared aroma: isobutyraldehyde (malty, green).
Sugar and vanilla barely smell alike, yet cooks put them together in 35,032 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
- Whisked to a stiff froth, they trap air and give the cake its light, risen crumb.
- Butter
- Creamed with sugar to trap air and add richness and a tender texture.
- Flour
- Provides the structure that holds the cake together as it bakes.
- Castor sugar
- Sweetens the cake and helps the creamed butter hold air.
- Walnuts
- Add crunch and a nutty flavour, and bring texture to the crumb.
The step that matters
Folding in the egg whites. Whisked whites hold air that gives lift, and overmixing or stirring vigorously knocks that air out, leaving a denser cake. Fold gently, just until combined.
Swap the walnut
How well each one fits the dish's main ingredients (flour, sugar, butter, egg, vanilla):
- Almondfits better
- Chestnutfits better
- Macadamia nutfits better
- Walnutthe original
Fit is the average pairing score against flour, sugar, butter, egg, vanilla. 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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