Why it works: Flour and butter 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 ↓
Parisian 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
Preheat the oven to 350°F (175°C).
Butter a cake tin and sprinkle it evenly with castor sugar.
Make the batter
In a bowl, beat the yolks with the sugar for 15 minutes.
Gradually add the potato flour in small amounts, mixing thoroughly for another 15 minutes.
Gently fold in the beaten egg whites quickly.
Bake
Pour the mixture into the prepared tin and bake until golden.
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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Flour + buttertop 12% of all pairsSmell alikelowCooked together124,287 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
-
Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
-
Potato + flourtop 15% of all pairsSmell alikemoderateCooked together5,355 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Egg + flourtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
Flour and butter 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
- Egg yolks
- Add richness and emulsify the batter, giving it body and a golden colour.
- Egg whites
- Whipped and folded in, they trap air that lifts the cake as it bakes.
- Potato flour
- Provides a light starch structure that sets the crumb while keeping it tender.
- Castor sugar
- Sweetens the batter and helps beat the yolks into a thick, stable base.
The step that matters
Folding in the egg whites. Egg whites hold air only when whipped, and overmixing or folding slowly deflates them. Folding gently and quickly keeps the trapped air, which is what lets the cake rise.
Swap the potato
How well each one fits the dish's main ingredients (egg, flour, sugar, butter):
- Chivefits better
- Leekfits better
- Shallotfits better
- Potatothe original
Fit is the average pairing score against egg, flour, sugar, butter. 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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