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 ↓
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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Make the cake
Preheat the oven to 350°F (175°C).
In a large bowl, cream together the butter and sugar until light and fluffy.
Add the eggs one at a time, mixing well after each addition.
Stir in the milk and mix until combined.
In a separate bowl, whisk together the flour and baking powder.
Gradually add the dry ingredients to the wet mixture, mixing until just combined.
Fold in the broken walnuts.
Pour the batter into two square pans and bake for 25-30 minutes or until a toothpick comes out clean.
Ice and assemble
For the icing, beat the egg whites until stiff peaks form, then gradually add the powdered sugar until smooth.
Frost both cakes and stack one on top of the other.
Cut the icing into small squares and place half a walnut in each square.
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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Butter + flourtop 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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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 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).
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
- Creaming with sugar traps air, giving the cake a light, tender crumb and rich flavour.
- Eggs
- Provide structure and richness, binding the batter as they set in the oven.
- Flour
- Forms the structure of the cake as its proteins set during baking.
- Baking powder
- Releases gas in the batter, helping the cake rise and turn light.
- Egg whites
- Whipped to stiff peaks, they give the icing its airy, marshmallow-like body.
The step that matters
Adding the dry ingredients to the wet mixture. Mixing only until just combined keeps gluten development low, so the cake stays tender rather than tough and dense.
Swap the walnut
How well each one fits the dish's main ingredients (milk, butter, sugar, flour, egg):
- Almondfits better
- Chestnutfits about as well
- Milletfits about as well
- Walnutthe original
Fit is the average pairing score against milk, butter, sugar, flour, egg. 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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