Why it works: Butter and milk are a kitchen classic. They rank in the top 7% of all ingredient pairs, and cooks put them together in 81,283 recipes. Both carry (z)-4-heptenal, which smells biscuit, cream. The science ↓
Potato Cream Pie
Ingredients
Directions
Prepare the filling
Boil the potatoes until tender and mash them through a sieve.
While warm, mix in the butter, then add the sugar, milk, and flavoring.
Separate the eggs; beat the yolks and whites until light.
Stir the beaten eggs into the mixture just before baking.
Bake and serve
Pour the mixture into pie crusts and bake until set.
Sift powdered sugar over the pie when done.
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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Butter + milktop 7% of all pairsSmell alikemoderateCooked together81,283 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Potato + milktop 9% of all pairsSmell alikemoderateCooked together3,611 recipes
Shared aroma: (e,z)-2,6-nonadienal (cucumber, melon).
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Potato + buttertop 13% of all pairsSmell alikemoderateCooked together6,456 recipes
Shared aroma: (z)-4-heptenal (biscuit, cream).
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Butter + eggtop 17% of all pairsSmell alikemoderateCooked together118,967 recipes
Shared aroma: decanal (soap, orange peel).
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Sugar + buttertop 17% of all pairsSmell alikemoderateCooked together98,233 recipes
Shared aroma: guaiacol (smoky, sweet).
Ranks compare each pair with 20,000 random ingredient pairs on CompKitchen. How we score pairs
What each ingredient does
- Potatoes
- Provide the bulk and creamy body of the filling.
- Butter
- Adds richness and fat, giving a smooth, tender texture.
- Sugar
- Adds sweetness and helps the custard brown lightly as it bakes.
- Eggs
- Set the filling into a sliceable custard and add lift when beaten.
- Milk
- Adds moisture and liquid that the eggs set into a custard.
The step that matters
Stir the beaten eggs in just before baking. Beaten eggs add air and set the filling when heated. Adding them early lets them deflate and weakens the set, so they should go in just before the pie enters the oven.
Swap the potato
How well each one fits the dish's main ingredients (sugar, butter, egg, milk):
- Potatothe original
- Sweet potatofits about as well
- Asparagusfits about as well
- Capsicumfits about as well
Fit is the average pairing score against sugar, butter, egg, milk. 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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