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 gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Prepare
Preheat the oven to 350°F (175°C).
Make the cake
Cream together the sugar and butter.
Add the egg yolks and whole egg, mixing well.
Stir in the cold water, flour, baking powder, and orange juice until combined.
Divide the batter into two greased cake pans.
Bake for 25-30 minutes or until a toothpick comes out clean.
Frost and serve
For frosting, beat the reserved egg whites and mix in boiled icing, adding grated orange rind.
Ice the cooled cake layers with the frosting.
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.
-
Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
-
Sugar + buttertop 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
- Sugar
- Sweetens the batter and, creamed with butter, helps give the cake a light crumb.
- Butter
- Adds fat for tenderness and flavour, and creaming it traps air for lift.
- Egg yolks
- Add richness, moisture and fat, and help bind the batter.
- Whole egg
- Adds structure and moisture, helping the batter set in the oven.
- Flour
- Provides the structure that sets the cake as it bakes.
- Baking powder
- Releases gas in the batter to make the cake rise.
The step that matters
Bake until a toothpick comes out clean. Baking too short leaves the centre wet and sunken, while over-baking dries the cake out. A toothpick test shows when the structure has set without overcooking.
Swap the orange
How well each one fits the dish's main ingredients (sugar, butter, egg, flour):
- Raisinfits better
- Vanillafits better
- Figfits better
- Orangethe original
Fit is the average pairing score against sugar, butter, 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.
More orange cake recipes
You might also like
The free Flavor Lab newsletter: one surprising pairing a week and the molecular reason it works, in 60 seconds. No spam, unsubscribe anytime.
Prefer an account? Create a free account to save pairings and unlock the full chemistry.

Orange Cream Rice Pudding121 recipes
Orange Gelatin100 recipes
Orange Sherbet73 recipes
Orange Custard56 recipes