Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Pineapple Cake
Ingredients
Directions
The book says “a slow oven”. The 300°F (150°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the topping
Melt the butter and brown sugar together in a frying pan.
Lay the pineapple slices in the pan to cover the bottom.
Add candied cherries or nuts if desired.
Make the batter
In a bowl, mix the sugar and egg yolks one at a time, beating well after each addition.
Stir in the flour, baking powder, and pineapple juice.
Fold in the stiffly beaten egg whites.
Pour the batter over the pineapple in the pan.
Bake and serve
Bake at 300°F (150°C) for 25 minutes.
Turn the cake upside down onto a plate and serve with whipped cream.
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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Nuts + flourtop 13% of all pairsSmell alikemoderateCooked together1,180 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Pineapple + nutstop 16% of all pairsSmell alikemoderateCooked together162 recipes
Shared aroma: furaneol (caramel, strawberry).
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
- Eggs
- Egg yolks and whipped whites give the cake its rich structure and light, airy crumb.
- Butter
- Adds fat and richness, and helps the brown sugar caramelise into the topping.
- Brown sugar
- Melts into the butter to form the caramel layer and adds moisture and sweetness.
- Flour
- Provides the structure that holds the cake together as it bakes.
- Baking powder
- Releases gas in the oven so the batter rises and becomes lighter.
- Pineapple
- Adds acidity and moisture, and its juice keeps the sponge tender.
The step that matters
Folding in the egg whites. Stiffly beaten whites hold air that makes the cake rise. Stirring them vigorously or letting them deflate before baking leads to a dense, flat cake.
Swap the nuts
The recipe marks nuts as optional. How well each one fits the dish's main ingredients (butter, sugar, pineapple, egg, flour):
- Almondfits better
- Macadamia nutfits better
- Chestnutfits better
- Nutsthe original
Fit is the average pairing score against butter, sugar, pineapple, egg, flour. 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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