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 ↓
Pineapple 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 cake
Preheat the oven to 350°F (175°C).
Cream together the sugar and butter until light and fluffy.
Add the milk and mix well.
Gradually add the flour and baking powder, mixing until smooth.
Fold in the egg whites gently.
Divide the batter into three layers and bake until golden.
Make the icing
For the icing, combine sugar and cold water in a saucepan and boil until it ropes and looks clear.
While boiling, beat the egg white until stiff.
Pour the hot sugar mixture into the beaten egg white, spoonful by spoonful, while continuing to beat.
Assemble
Frost each layer of the cake with the boiled icing and top with grated pineapple.
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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + pineappletop 12% of all pairsSmell alikemoderateCooked together885 recipes
Shared aroma: methyl 2-methylbutyrate (fruity, apple).
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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
- Creams with sugar to trap air, giving the cake a light, tender crumb.
- Flour
- Forms the structure that holds the cake's layers together as they bake.
- Egg whites
- Add structure and lift to the batter when folded in gently.
- Baking powder
- Releases gas in the batter so the layers rise and become airy.
- Sugar
- Sweetens the cake and helps brown it while creaming aerates the batter.
- Milk
- Adds moisture and helps form a smooth, tender batter.
The step that matters
Adding the hot sugar syrup to the egg white. The syrup must be boiled to the right point and poured slowly while beating, so the hot sugar cooks and stabilizes the egg white into a glossy, stiff foam. Pouring too fast can collapse the foam.
Swap the pineapple
How well each one fits the dish's main ingredients (sugar, butter, milk, flour, egg):
- Vanillafits better
- Raisinfits better
- Figfits better
- Pineapplethe original
Fit is the average pairing score against sugar, butter, milk, 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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