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 ↓
Orange 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.
Make the batter
Combine eggs and sugar in a bowl.
Place the bowl over a saucepan with a little cold water and heat gently, whipping until warm and thick.
Sift in the flour and gently fold in the melted butter.
Bake and cool
Pour the mixture into a buttered and floured mold.
Bake in a slow oven at 300°F (150°C) for about 20 minutes.
Allow to cool for a few minutes, then turn out.
Decorate
Decorate with butter cream flavored with orange juice or top with candied oranges.
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.
Photo for illustrative purposes only · Contact us to use it
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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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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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Trap air when whipped, giving the cake its light, risen structure.
- Castor sugar
- Sweetens the cake and helps stabilise the whipped egg foam.
- Flour
- Sets during baking to give the sponge its structure.
- Butter
- Adds fat for a tender crumb and rich flavour.
- Orange rind
- Adds fragrant citrus aroma to the cake.
The step that matters
Whipping the eggs and sugar over warm water. Gentle heat helps the sugar dissolve and the eggs foam to full volume, which gives the sponge its lift. Overheating can scramble the eggs, and under-whipping leaves the cake dense.
Swap the orange
How well each one fits the dish's main ingredients (egg, butter, sugar, flour):
- Raisinfits better
- Vanillafits better
- Figfits better
- Orangethe original
Fit is the average pairing score against egg, butter, sugar, 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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