Why it works: Orange and lemon match in chemistry and in kitchens. They rank in the top 1% of all ingredient pairs, and cooks put them together in 10,634 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Orange Cake
Ingredients
Directions
The book says “a slow oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the tins
Preheat the oven to 350°F (175°C).
Brush two 7‑inch sandwich tins with warmed butter and dust with a mixture of flour and caster sugar.
Make and bake the cakes
Beat the eggs slightly, then add the sugar and water.
Gradually mix in the flour.
Stir in the baking soda and cream of tartar until smooth.
Divide the mixture between the prepared tins and bake for 10‑15 minutes.
Turn the cakes out onto a sieve to cool.
Make the filling and assemble
Grate the peel of the orange and lemon, then press and strain their juices.
In a saucepan, combine the grated peel, juice, water, and sugar, and bring to a boil.
Stir in the arrowroot mixed with a little cold water and remove from heat.
Once slightly cool, spread the filling on one cake, place the other cake on top, and let it set.
Once set, cover the top with orange glace.
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.
-
Orange + lemontop 1% of all pairsSmell alikestrongCooked together10,634 recipes
Shared aroma: 3-hexenal (apple, fruity).
-
Flour + arrowroottop 2% of all pairsSmell alikestrongCooked together525 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Lemon + arrowroottop 4% of all pairsSmell alikestrongCooked together553 recipes
Shared aroma: coumarin (sweet, hay).
-
Cream + buttertop 8% of all pairsSmell alikemoderateCooked together41,516 recipes
Shared aroma: delta-dodecalactone (sweet, creamy).
-
Sugar + creamtop 9% of all pairsSmell alikemoderateCooked together43,450 recipes
Shared aroma: 2,3-butanedione (butter, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Eggs
- Bind the batter and add structure and lift to the cake crumb.
- All-purpose flour
- Provides the main structure of the cake once set by the heat.
- Arrowroot
- Thickens the citrus filling into a glossy, sliceable set.
- Cream of tartar
- Acidifies the batter, stabilising it and working with baking soda to lighten the crumb.
- Baking soda
- Reacts with the acidic cream of tartar to produce gas that raises the cake.
- Orange
- Supplies juice and peel for the bright, aromatic, tangy filling.
The step that matters
Stir in the arrowroot mixed with a little cold water and remove from heat. Arrowroot thickens only when heated and then cooled; stirring it into a boiling mixture and leaving it on the heat too long can thin or break the filling, so it should be removed from heat as soon as it thickens.
Swap the orange
How well each one fits the dish's main ingredients (sugar, flour, egg, cream, butter, lemon, arrowroot):
- Vanillafits better
- Raisinfits better
- Coconutfits better
- Orangethe original
Fit is the average pairing score against sugar, flour, egg, cream, butter, lemon, arrowroot. 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.

Lemon Cake228 recipes
Lemon Ice147 recipes
Orange Cream Rice Pudding121 recipes
Lemon Sherbet103 recipes