Why it works: Flour and milk are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Orange-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.
Prepare the batter
Preheat the oven to 350°F (175°C).
In a bowl, mix sugar, flour, water or milk, egg yolks, baking powder, and grated orange rind until smooth.
In another bowl, beat the egg whites until stiff peaks form, then gently fold into the batter.
Bake and ice
Pour the batter into jelly‑cake tins and bake until golden.
For the icing, beat 2 egg whites until stiff, then gradually add powdered sugar and orange juice until smooth.
Spread the icing between the layers and on top of the cake.
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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Flour + milktop 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).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Milk + orangetop 15% of all pairsSmell alikemoderateCooked together4,696 recipes
Shared aroma: 1-octen-3-one (mushroom, metallic).
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Milk + eggtop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
Flour and milk barely smell alike, yet cooks put them together in 78,219 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
- Egg whites
- Whipped to stiff peaks, they lighten the batter and give the cake its rise and airy crumb.
- Egg yolks
- Add richness and tenderness, and help bind the batter into a smooth, set crumb.
- Flour
- Provides the structure that holds the cake together as it bakes.
- Sugar
- Sweetens the cake and helps it brown as it bakes.
- Baking powder
- Releases gas during baking, helping the cake rise.
- Powdered sugar
- Dissolves into the whipped egg whites to form a smooth, sweet icing.
The step that matters
Folding in the egg whites. Whipped egg whites hold air that gives the cake its lift. Stirring them in vigorously knocks out that air, while gentle folding keeps the batter light and the cake from turning dense.
Swap the orange
How well each one fits the dish's main ingredients (sugar, flour, milk, egg):
- Vanillafits better
- Raisinfits better
- Figfits better
- Orangethe original
Fit is the average pairing score against sugar, flour, milk, 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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