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 ↓
Cheese-tartlets
Ingredients
Directions
The book says “a very slack oven”. The 350°F (175°C) in the steps is the modern equivalent, not the book's own figure.
Prepare
Preheat the oven to 350°F (175°C).
Line the tartlet moulds with thinly rolled puff pastry.
Make the filling
In a saucepan, combine flour, grated parmesan, and yolks of eggs.
Add butter and a pinch of sugar, stirring over low heat until the butter melts.
Remove from heat and let cool, then fold in the whipped egg whites.
Bake and serve
Fill the moulds with the mixture and place them on a baking sheet.
Bake in the oven until set, then sprinkle with grated parmesan and serve immediately.
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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Flour + sugartop 15% of all pairsSmell alikemoderateCooked together92,116 recipes
Shared aroma: phenylacetaldehyde (hawthorne, honey).
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Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
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Egg + buttertop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Butter + sugartop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
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
- Eggs yolks
- Bind the filling and add richness and a set structure when baked.
- Whipped egg whites
- Add air to the filling so the tartlets rise and turn light and tender.
- Parmesan
- Adds savory, salty flavor and browning on the cheese-topped surface.
- Butter
- Adds fat for a rich, smooth texture and flavor in the filling.
- Flour
- Thickens the filling so it holds its shape while baking.
The step that matters
Fold in the whipped egg whites. Once the base has cooled, folding gently keeps the air in the whites. Stirring them in hard deflates the foam, so the tartlets bake flatter and denser.
“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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