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 Sponge
Ingredients
Directions
Make the syrup
Boil the water and sugar in a saucepan until dissolved.
Peel and slice the apples thinly.
Add the sliced apples to the syrup and stew until tender.
Add the gelatin.
Strain the mixture through a sieve.
Finish and set
Stir in the lemon juice and rind.
Beat the mixture until cool.
Beat the egg whites until stiff.
Fold the beaten egg whites into the mixture.
Beat everything together until cold.
Pour the mixture into a mold.
Serve with custard.
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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Apple + lemontop 14% of all pairsSmell alikemoderateCooked together7,551 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
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Apple + sugartop 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).
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Lemon + eggtop 19% of all pairsSmell alikelowCooked together44,316 recipes
Shared aroma: (e,e)-2,4-decadienal (fatty, deep fried).
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Sugar + eggtop 21% of all pairsSmell alikemoderateCooked together122,807 recipes
Shared aroma: 2-nonenal (fatty, green).
Apple and sugar 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
- Apples
- Provide bulk and the apple flavour that forms the body of the sponge.
- Gelatine
- Sets the mixture so it holds its shape when cold.
- Egg whites
- Whipped to foam, they lighten the mixture into a sponge-like texture.
- White sugar
- Sweetens the dish and helps dissolve the gelatine in the syrup.
- Lemon juice
- Adds acidity that brightens the sweetness of the apples and sugar.
The step that matters
Fold the beaten egg whites into the mixture. The mixture must be cool and just beginning to thicken before the egg whites go in. If it is too warm, the foam collapses and the sponge loses its lightness; if it has already set, the whites will not blend evenly.
Swap the apple
How well each one fits the dish's main ingredients (sugar, lemon, egg):
- Orangefits better
- Vanillafits better
- Limefits better
- Applethe original
Fit is the average pairing score against sugar, lemon, 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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