Why it works: Butter and milk 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 ↓
Lemon Jelly Cake
Ingredients
Directions
The book gives no oven temperature. The 350°F (175°C) in the steps was added when the recipe was transcribed, as a starting point.
Prepare the batter
Preheat the oven to 350°F (175°C).
Cream the butter and sugar together.
Add the beaten egg yolks, then mix in the milk, flour, and baking powder.
Fold in the beaten egg whites and flavor with lemon essence.
Bake
Pour the batter into layers and bake until golden.
Make the filling
For the filling, beat the egg yolks with sugar, melted butter, lemon juice, and grated rind.
Cook the filling over low heat for 10 minutes, stirring constantly.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + flourtop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Milk + flourtop 14% of all pairsSmell alikelowCooked together78,219 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Sugar + flourtop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Milk + lemontop 15% of all pairsSmell alikemoderateCooked together19,053 recipes
Shared aroma: 2-nonenal (fatty, 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
- All-purpose flour
- Forms the main structure of the cake as its proteins set during baking.
- Eggs
- Add structure, richness, and help the batter set as it bakes.
- Butter
- Adds fat for a tender crumb and rich flavor.
- Baking powder
- Releases gas during baking so the layers rise and turn light.
- Granulated sugar
- Sweetens the cake and helps it brown and stay tender.
- Lemon juice
- Adds acidity and bright citrus flavor to the filling.
The step that matters
Cooking the lemon filling. Egg yolks thicken as they heat but can scramble or curdle if overheated. Cooking over low heat while stirring constantly spreads the heat evenly and keeps the filling smooth.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, butter, milk, flour, egg):
- Vanillafits better
- Raisinfits better
- Figfits better
- Lemonthe original
Fit is the average pairing score against sugar, butter, milk, flour, 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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