Why it works: Milk and corn are a kitchen classic. They rank in the top 10% of all ingredient pairs, and cooks put them together in 6,955 recipes. Both carry hexanal, which smells green, grassy. The science ↓
Apple Kuchen
Ingredients
Directions
Prepare the apples and crust
Peel and quarter the apples, then steam until tender.
Line a deep pie plate with pastry and place a layer of apples inside.
Make the custard
Heat the milk in a double boiler.
Mix the egg yolks, sugar, and corn starch, then add to the boiling milk.
Stir until the mixture thickens, then pour it over the apples in the pie plate.
Top with meringue and brown
Beat the egg whites and granulated sugar until stiff peaks form to make a meringue.
Spread the meringue over the pie and brown it in the oven.
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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Milk + corntop 10% of all pairsSmell alikemoderateCooked together6,955 recipes
Shared aroma: hexanal (green, grassy).
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Apple + milktop 11% of all pairsSmell alikemoderateCooked together4,104 recipes
Shared aroma: 4-heptenal (creamy, biscuit).
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Apple + corntop 15% of all pairsSmell alikemoderateCooked together330 recipes
Shared aroma: 2,4-decadienal (seaweed).
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Apple + sugartop 18% of all pairsSmell alikelowCooked together16,478 recipes
Shared aroma: beta-damascenone (apple, rose).
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Milk + eggtop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
Apple and sugar barely smell alike, yet cooks put them together in 16,478 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
- Apples
- Provide the fruit base and body of the pie once steamed until tender.
- Egg yolks
- Thicken the milk mixture into a custard that sets when cooled.
- Corn starch
- Thickens the milk and egg yolk mixture so it holds its shape.
- Egg whites
- Whipped into a meringue that forms a light, airy topping that browns in the oven.
- Milk
- Forms the liquid base of the custard, which thickens when heated with the yolks.
The step that matters
Stir the custard until it thickens. Starch needs to reach a boil in the custard to thicken fully. Undercooked starch leaves the filling thin and runny, so it will not hold its shape over the apples.
Swap the apple
How well each one fits the dish's main ingredients (milk, egg, sugar, corn):
- Vanillafits better
- Coconutfits better
- Figfits better
- Applethe original
Fit is the average pairing score against milk, egg, sugar, corn. 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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