Why it works: Butter and flour are a kitchen classic. They rank in the top 12% of all ingredient pairs, and cooks put them together in 124,287 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Jelly Cake
Ingredients
Directions
The book says “a quick oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the batter
Preheat the oven to 400°F (200°C).
Beat the egg whites with 1 tablespoon of sugar until stiff.
Cream the butter and 8 ounces of sugar until light.
Beat in the egg yolks, then stir in half of the flour and half of the egg whites.
Add the remaining flour and egg whites, then stir in the lemon extract.
Bake and assemble
Pour the mixture into well-buttered jelly cake plates, filling them half an inch deep.
Bake until golden.
Spread with strawberry or raspberry marmalade, layer them, or roll them up.
Trim the ends and cut into slices half an inch thick.
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 + flourtop 12% of all pairsSmell alikelowCooked together124,287 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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Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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Flour + lemontop 17% of all pairsSmell alikemoderateCooked together30,404 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
- Eggs
- Whipped whites give lift and airy structure, while yolks add richness and help set the crumb.
- Butter
- Creamed with sugar, it traps air and adds tenderness and richness to the crumb.
- Flour
- Its proteins set during baking, forming the cake's structure.
- Baking powder
- Releases gas in the batter, helping the cake rise.
- White granulated sugar
- Sweetens the cake and helps create a light, aerated creamed base.
The step that matters
Folding in the beaten egg whites. Stirring too vigorously deflates the whipped whites, losing the air that lightens the cake. Fold gently so the batter stays aerated and rises evenly.
Swap the lemon
How well each one fits the dish's main ingredients (sugar, butter, egg, flour):
- Raisinfits better
- Vanillafits better
- Figfits about as well
- Lemonthe original
Fit is the average pairing score against sugar, butter, egg, 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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