Why it works: Butter and lemon are a kitchen classic. They rank in the top 16% of all ingredient pairs, and cooks put them together in 41,227 recipes. Both carry 3-hexenal, which smells apple, fruity. The science ↓
Lemon Jelly Cake
Ingredients
Directions
Make the batter
Make a sponge batter.
Make the lemon filling
In a saucepan, combine sugar, butter, lemon juice, lemon rind, and egg whites.
Cook over medium heat until it comes to a boil, then remove from heat and let cool.
Assemble and roll
Bake the sponge cake in sheets.
Spread the lemon mixture thickly on the sponge cake.
Roll the cake tightly to hold the filling together.
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 + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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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).
Sugar and lemon barely smell alike, yet cooks put them together in 53,532 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
- White sugar
- Sweetens the filling and balances the sharpness of the lemon.
- Butter
- Adds fat for richness and a smooth, soft texture in the filling.
- Lemons
- Provide the acidity and bright aroma of the filling, from juice and rind.
- Egg whites
- Set as they heat, helping the filling thicken and hold its shape.
The step that matters
Bring the lemon mixture to a boil. Egg whites set as they heat, so the mixture must reach a boil to thicken properly. Removing it from heat then lets it cool to a spreadable consistency.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, butter, egg):
- Vanillafits better
- Lemonthe original
- Raisinfits about as well
- Figfits about as well
Fit is the average pairing score against sugar, butter, 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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