Why it works: Vanilla and chocolate are a kitchen classic. They rank in the top 5% of all ingredient pairs, and cooks put them together in 10,020 recipes. Both carry sotolon, which smells curry, maple. The science ↓
Walnut Cake
Ingredients
Directions
The book says “a fairly hot 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 until light.
Gradually stir in the eggs.
Add the chopped walnuts, vanilla essence, baking powder, and sifted flour.
Pour the mixture into a well-buttered flat cake tin.
Bake and finish
Bake in a preheated oven at 350°F (175°C) until golden brown.
Once cooled, ice with moka, chocolate, or fondant icing.
Decorate the top with halves of peeled walnuts and glacé fruit.
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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Vanilla + chocolatetop 5% of all pairsSmell alikemoderateCooked together10,020 recipes
Shared aroma: sotolon (curry, maple).
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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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Walnut + chocolatetop 10% of all pairsSmell alikemoderateCooked together1,548 recipes
Shared aroma: 3-ethyl-2,5-dimethylpyrazine (roasted, nutty).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 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
- Butter
- Creams with the sugar to trap air, giving the cake a tender, rich crumb.
- Eggs
- Bind the batter and add structure and richness as they set in the oven.
- Flour
- Forms the cake's main structure once heated and set.
- Baking powder
- Releases gas in the oven so the cake rises and becomes light.
- Chopped walnuts
- Add nutty flavour and a slightly firm texture throughout the crumb.
- Castor sugar
- Aerates with the butter and sweetens the cake while helping it brown.
The step that matters
Creaming the butter and sugar until light. Beating sugar into butter traps air bubbles that expand in the oven. Under-creaming leaves a dense cake, while over-mixing after the flour is added can toughen it.
Swap the walnut
How well each one fits the dish's main ingredients (butter, sugar, egg, flour, vanilla, chocolate):
- Almondfits better
- Hazelnutfits better
- Macadamia nutfits better
- Walnutthe original
Fit is the average pairing score against butter, sugar, egg, flour, vanilla, chocolate. 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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