Why it works: Apple and lemon are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 7,551 recipes. Both carry trans-2-nonenal, which smells cardboard, fatty. The science ↓
Apple Cake
Ingredients
Directions
Make the syrup
Combine the sugar and water in a saucepan.
Boil until it forms a syrup.
Cook the apples
Add the sliced apples and lemon rind to the syrup.
Cook until thickened.
Set and serve
Pour the mixture into a mold and let it cool.
Serve cold with custard or cream poured around it.
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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Apple + lemontop 14% of all pairsSmell alikemoderateCooked together7,551 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Sugar + appletop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
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Sugar + lemontop 18% of all pairsSmell alikelowCooked together53,532 recipes
Shared aroma: 2-nonenal (fatty, green).
Sugar and apple barely smell alike, yet cooks put them together in 16,478 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
- Dissolves in water to form the syrup that sweetens and gives the cake its body.
- Apples
- Provide the bulk and structure, softening as they cook and setting into a sliceable mass as they cool.
- Lemon rind
- Adds bright citrus aroma that balances the sweetness of the syrup.
The step that matters
Cook until thickened. The mixture must be cooked long enough for the sugar to concentrate and the apples to release their pectin, so it sets firmly when cooled. Undercooking leaves it runny, while overcooking can scorch the sugar.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, apple):
- Pearfits better
- Vanillafits better
- Apricotfits better
- Lemonthe original
Fit is the average pairing score against sugar, apple. 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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