Why it works: Flour and milk are a kitchen classic. They rank in the top 14% of all ingredient pairs, and cooks put them together in 78,219 recipes. Both carry isobutyraldehyde, which smells malty, green. The science ↓
Custard Pie
Ingredients
Directions
Make the custard
Scald the milk in a saucepan.
In a bowl, mix the egg yolks, sugar, and flour until smooth.
Gradually add the scalded milk to the egg mixture, stirring constantly.
Assemble and bake
Pre-bake the pie crust until lightly golden.
Pour the custard mixture into the pre-baked crust.
Beat the egg whites until frothy, then gradually add the sugar, continuing to beat until stiff peaks form.
Spread the meringue over the custard and bake until lightly browned.
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 + milktop 14% of all pairsSmell alikelowCooked together78,219 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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Egg + milktop 18% of all pairsSmell alikemoderateCooked together88,785 recipes
Shared aroma: 2-nonenal (fatty, green).
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Sugar + milktop 18% of all pairsSmell alikelowCooked together77,875 recipes
Shared aroma: 2-nonenal (fatty, green).
Flour and milk barely smell alike, yet cooks put them together in 78,219 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
- Thicken the custard and give it a rich, smooth set when heated.
- Flour
- Stabilizes the custard so it thickens without curdling or becoming runny.
- Milk
- Forms the liquid base of the custard that sets around the egg proteins.
- Egg whites
- Whip into a foam that forms the meringue topping, adding lightness and browning.
- Sugar
- Sweetens the custard and meringue and helps stabilize the whipped egg whites.
The step that matters
Gradually add the scalded milk to the egg mixture, stirring constantly.. Adding hot milk too quickly can scramble the egg yolks, leaving lumps. Adding it slowly while stirring gently warms the yolks so the custard thickens smoothly.
“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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