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 ↓
Neapolitan 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.
Preheat the oven to 350°F (175°C).
In a bowl, cream together the butter and sugar until light and fluffy.
Add the sweet milk and mix well.
Gradually add the flour, egg whites, cream of tartar, and baking soda, mixing until smooth.
Divide the batter in half. Color one half with pink food coloring.
Pour the pink batter into jelly tins.
In another bowl, cream together ¾ cup butter, 2 cups sugar, 1 cup milk, 3 cups flour, and the egg yolks.
Add the cream of tartar and baking soda, mixing until smooth.
Leave half of this batter yellow and mix the other half with the grated chocolate.
Pour the yellow batter into jelly tins.
Layer the cakes with icing made from the whisked egg whites, powdered sugar, and lemon juice.
Start with the chocolate layer, then add the pink, white, and yellow layers.
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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Butter + creamtop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
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Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
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Cream + chocolatetop 11% of all pairsSmell alikemoderateCooked together5,466 recipes
Shared aroma: delta-decalactone (sweet, creamy).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 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
Swap the lemon
How well each one fits the dish's main ingredients (butter, sugar, milk, flour, egg, cream, chocolate):
- Vanillafits better
- Raisinfits better
- Coconutfits better
- Lemonthe original
Fit is the average pairing score against butter, sugar, milk, flour, egg, cream, chocolate. Candidates are from the same food group and used in at least 100 recipes.
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