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
Prepare the filling
Grate the apples and combine with lemon juice, lemon rind, sugar, and beaten egg in a tin basin.
Simmer the mixture, stirring constantly, until cooked, then set aside to cool.
Make the batter
Beat the egg whites and yolks separately.
Mix the butter and sugar together, then add milk.
Combine the butter mixture with flour and baking powder.
Divide the batter into four equal parts and pour into baking tins or jelly pans.
Assemble
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 and tart flavour that forms the cooked fruit filling.
- Eggs
- Add structure and richness, with beaten whites helping the cake rise and set.
- Butter
- Adds fat for tenderness and a rich crumb in the batter.
- Flour
- Forms the structure of the cake batter as it sets in the oven.
- Baking powder
- Releases gas to lift the batter so the layers rise.
- Sugar
- Adds sweetness and helps the cake brown and keep moisture.
The step that matters
Simmer the apple mixture until cooked. The apple mixture must be cooked through and cooled before use. Stirring constantly prevents the egg and sugar from scorching or curdling on the base of the pan, and cooling keeps the filling from soaking into the hot cake layers unevenly.
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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