Why it works: Milk and butter are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Apple Jelly Cake
Ingredients
Directions
Make the filling
Combine grated apples, lemon juice and rind, sugar, and beaten egg in a tin basin.
Simmer the mixture until cooked, stirring constantly.
Set the mixture aside to cool.
Make the batter
Beat the egg whites.
Beat the yolks.
Mix butter and sugar together, then add milk.
Sift in flour and baking powder and mix until combined.
Divide the batter into four equal parts.
Bake and assemble
Pour the batter into baking tins or jelly pans.
Use the cooled apple mixture as a filling while the cake is still hot.
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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Milk + buttertop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Apple + milktop 11% of all pairsSmell alikemoderateCooked together4,104 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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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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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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
- Apples
- Provide moisture, tartness and natural pectin that sets the filling into a jelly-like layer.
- Eggs
- Add structure and richness, with the whites beaten separately to help the batter rise.
- Butter
- Adds fat for a tender crumb and rich flavour.
- Flour
- Forms the structure of the cake as the batter sets.
- Baking powder
- Releases gas in the batter so the cake rises and becomes light.
- Sugar
- Adds sweetness and helps keep the crumb soft and moist.
The step that matters
Simmer the apple mixture until cooked, stirring constantly. Apples and sugar scorch easily on the bottom of a pan. Constant stirring spreads the heat evenly and keeps the filling smooth and free of burnt flavour.
Swap the apple
How well each one fits the dish's main ingredients (lemon, sugar, egg, milk, butter, flour):
- Vanillafits better
- Raisinfits better
- Figfits better
- Applethe original
Fit is the average pairing score against lemon, sugar, egg, milk, butter, 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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