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. The book gives no cooking times either; the times in the steps were added in transcription, so check for doneness rather than trusting the clock.
Make the cake
Preheat the oven to 350°F (175°C).
Cream the butter and granulated sugar together until light and fluffy.
Add the milk and the separated egg yolks, mixing well.
Sift the flour and baking powder together, then gradually add to the mixture.
In a separate bowl, beat the egg whites until stiff peaks form, then fold them into the batter.
Pour the batter into a greased cake pan and bake for 25-30 minutes or until a toothpick comes out clean.
Make the filling and finish
For the filling, cook the grated lemon, grated apples, beaten egg, and sugar in a double boiler until clear.
Allow the filling to cool, then spread it on the cooled cake.
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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Milk + appletop 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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Lemon + appletop 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
- Butter
- Creams with the sugar to trap air and give the cake a tender, rich crumb.
- Eggs
- Egg yolks add richness and structure, while whipped whites lighten the batter.
- Flour
- Forms the structure of the cake once the batter is set by heat.
- Baking powder
- Releases gas in the batter so the cake rises and becomes light.
- Apples
- Grated apples add moisture and tartness to the filling.
- Lemon
- Grated lemon adds aroma and acidity to the filling.
The step that matters
Cooking the filling in a double boiler until clear. Gentle indirect heat cooks the egg gently so it thickens smoothly without curdling or scrambling. Overheating causes the egg to set into lumps.
Swap the apple
How well each one fits the dish's main ingredients (butter, sugar, milk, egg, flour, lemon):
- Vanillafits better
- Raisinfits better
- Figfits better
- Applethe original
Fit is the average pairing score against butter, sugar, milk, egg, flour, lemon. 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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