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 ↓
Apple Souffle
Ingredients
Directions
The book says “a moderately hot oven”. The 400°F (200°C) in the steps is the modern equivalent, not the book's own figure.
Prepare the apple pulp
Pass the cooked apples through a sieve.
Make the base
Sift together cornstarch and flour dissolved in cold water.
Melt butter with salt, then add boiling water and the flour-cornstarch mixture.
Sweeten the hot apple pulp to taste and add lemon juice, stirring thoroughly.
Remove from heat and stir in the beaten egg yolks and the beaten egg whites.
Bake
Pour the mixture into a shallow baking dish.
Bake at 400°F (200°C) until puffed and brown.
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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Apple + lemontop 14% of all pairsSmell alikemoderateCooked together7,551 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Apple + buttertop 14% of all pairsSmell alikemoderateCooked together8,706 recipes
Shared aroma: trans-2-nonenal (cardboard, fatty).
-
Flour + eggtop 15% of all pairsSmell alikelowCooked together106,462 recipes
Shared aroma: isobutyraldehyde (malty, green).
-
Butter + lemontop 16% of all pairsSmell alikemoderateCooked together41,227 recipes
Shared aroma: 3-hexenal (apple, fruity).
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 whites
- Whipped to stiff froth, they lift and puff the soufflé as it bakes.
- Egg yolks
- Enrich the base and help set the custard-like structure as it cooks.
- Cornstarch
- Thickens the hot apple pulp into a stable base that holds the foam.
- Apples
- Provide the main body, flavor and moisture of the soufflé.
The step that matters
Folding in the egg whites. Stir the yolks in gently and fold the whites in just until combined, because overmixing knocks out the air bubbles that make the soufflé rise.
Swap the apple
How well each one fits the dish's main ingredients (flour, butter, lemon, egg):
- Raisinfits better
- Vanillafits better
- Blueberryfits better
- Applethe original
Fit is the average pairing score against flour, butter, lemon, 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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